Armor of Agathys 5e - D&D 5th Edition Spell Book

Armor of Agathys 5e DnD Spell
Armor of Agathys 5e Image

Armor of Agathys 5e Spell Effects

1st-level abjuration


Casting Time: 1 action

Range: Self

Components: V, S, M (a cup of water)

Duration: 1 hour


A protective magical force surrounds you, manifesting as a spectral frost that covers you and your gear. You gain 5 temporary hit points for the duration. If a creature hits you with a melee attack while you have these hit points, the creature takes 5 cold damage.


At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both the temporary hit points and the cold damage increase by 5 for each slot level above 1st.


All information about Armor of Agathys 5e comes from the DnD Player's Handbook.

Armor of Agathys 5e

Classes That Can Cast Armor of Agathys 5e

Surprisingly, the only class in the Player's Handbook that may cast Armor of Agathys is the warlock. Through other game expansions, players may access a sorcerer and paladin subclass, along with the mark of warding dwarf, who may also cast the spell.



Armor of Agathys Spell Effectiveness

Healing and Damage 1st Level Spell 2nd Level Spell 3rd Level Spell 4th Level Spell 5th Level Spell 6th Level Spell 7th Level Spell 8th Level Spell 9th Level Spell
Temp. Healing 5 10 15 20 25 30 35 40 45
Damage 5 10 15 20 25 30 35 40 45
Average Fighter DPR 11 15 19 23 27 30.5 34 37.5 41

Calculations for Healing and Damage

Note that Armor of Agathys only provides temporary hit points, not actual healing. Furthermore, the cold damage dealt by Armor of Agathys only activates so long as the temporary hit points provided by the spell are still active. Finally, note that the DPR (damage per round) provided in the third row is a very rough, estimated calculation of damage, before factoring in the attack's hit chance - in an effort to best provide direct comparison of value.


Armor of Agathys Usefulness

Armor of Agathys 5e is both a temporary healing and damage spell. Players should use Armor of Agathys in the following circumstances:

  • Ideally, before any battles begin. Since Armor of Agathys 5e has a 1-hour duration, it's best used before danger shows up, to provide more actions during combat for casting other high-priority spells.
  • When fighting enemies with melee attacks. Since Armor of Agathys only deals cold damage to melee attackers, the spell loses half of its value against other spell casters or enemies who attack from a ranged distance.
  • Against enemies with cold vulnerability, to maximize damage dealt.
  • Against enemies who deal high amounts of damage. Healing after taking damage is a reactive approach to combat, whereas Armor of Agathys 5e proactively increases hit points in anticipation of difficult battles.
  • As a way to make a fragile (especially spell caster) character more durable.


Combine Armor of Agathys 5e with the Following Spells

Even though Armor of Agathys 5e admittedly has critical limitations to its effectiveness in certain circumstances, it can still be combined with other key spells to considerable effect:

  • Bless 5e: the bless spell has limitations of its own, though it does provide provide a +1d4 bonus to saving throws. Basically, since it reduces spell damage, it's useful to have in addition to the temporary hit points provided by armor of agathys.
  • Cause Fear 5e: since Armor of Agathys is intended to protect characters during battle, or dissuade enemies from attacking, cause fear can be a great supplement. If cause fear fails or its effect fades, then Armor of Agathys is still in place to help keep characters alive against enemy aggression.
  • Charm Person 5e: similarly, charm person may be used to prevent an enemy from attacking. Should the spell fail or its effect end, having a backup defensive spell is always valuable.
  • Cure Wounds 5e: if the temporary bonus hit points from armor of agathys get reduced and a character takes damage, having additional healing is always helpful.
  • Haste 5e: as with the bless 5e spell, haste provides additional protection in the form of +2AC, doubled movement speed, and advantage on Dexterity saving throws. The extra hit points from armor of agathys can help keep hasted characters alive even longer, particularly against difficult foes. 
  • Mage Armor 5e: consider mage armor a lesser version of the haste spell, effectively giving targets +3AC (depending on character builds, etc.). The more hit points a character has - such as from armor of agathys - the more time that bonus AC has to reduce damage taken.


Players should also be aware that temporary hit points cannot stack in DnD 5e. That means spells such as Aid 5e cannot give characters additional hit points, if they're already affected by spells or effects such as armor of agathys 5e.


Armor of Agathys 5e Counters

In all reality, armor of agathys 5e has lots of counters, making it probably a mid-tier spell at best. Though effects like Silence 5e can't be used to directly counter armor of agathys (in most cases) since the spell will probably most often be used prior to battle, there are still other options.


For example, the cold damage from armor of agathys only takes place if the attack that hits them is melee, and before the temporary hit points granted from the effect are depleted. So, if a character with armor of agathys is attacked from range - like with a bow and arrow, or spell - then no cold damage is dealt. Similarly, if melee characters just wait to attack a target who's benefiting from armor of agathys until those temporary hit points are somehow removed, then there's no danger of taking cold damage.


Finally, the biggest "counter" to armor of agathys is to actually deplete the temporary hit points. Consider spells like mage armor, for comparison. Mage armor's bonus to AC doesn't ever go away, at least until the spell's effect ends. So, if the character takes damage, then gets healing, mage armor is still fully in effect. Meanwhile, as soon as 5-damage per spell level is dealt to a character with armor of agathys, the effect fades. Healing doesn't "return" the effect, or provide more value. Basically, it's just about the easiest spell in the game to completely negate.

Armor of Agathys-Type Spells in Eternity TTRPG

I feel like most all great RPGs, whether they're a TTRPG or video game have some kind of frost shell. Which, you can imagine, is basically what comes to mind for me with armor of agathys.


In the Eternity TTRPG Game System - a tabletop game like DnD - there are several spell effects similar to armor of agathys. Below is one such example, which is probably the most similar type of spell.

Cryomancer Class Icon

Cryomancer - Core Class Spell

Glacial Shell (Magic): you are resistant to cold, and immune to ice damage (including ice damage from other cryomancers). Also, anyone who melee attacks you, roll +7Faith vs. Resilience, gives -2Speed for 1turn. “Glacial Shell” cannot Double-Hit or give a Block. Once this Spell is chosen it becomes a passive effect, always active, and cannot be dispelled.

  • (Frost Knight) You can now cast this Spell on other targets. You can instead choose to continually maintain this Critical for 1Inspiration (and 0Wisdom), per target other than yourself.
  • (Spells of Everwinter) You also gain +3Resilience, +3Dodge, and +3Will. You can instead choose to continually maintain this Critical for 3Inspiration (and 0Wisdom).
  • (Elemental Ice) Gives -4Speed for 1turn. You can instead choose to continually maintain this Critical for 1Intelligence (and 0Wisdom). 


Though Glacial Shell doesn't deal damage, but rather lowers enemy Speed, it also only affects melee attackers. Similar to armor of agathys 5e though, it's also cold-themed, and intended to provide protection to the spell caster or their target(s). If used as a Critical, this spell can provide substantial protection either against melee attackers, or even against any attacking enemy.


Curious to learn more? Check out the Eternity TTRPG Core Game!

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Jacob Tegtman Eternity TTRPG Creator

Author - Jacob Tegtman

Dear reader, I hope you enjoyed this article. Tabletop gaming has been a passion of mine since I was 6 years old. I've played just about every game from Dungeons and Dragons to video games like Final Fantasy. These games have inspired me, made me laugh, made me cry, and brought me endless hours of enjoyment.


I started Eternity TTRPG - and the indie tabletop game that goes along with it (Eternity Shop) - to share my love of gaming with others. I believe that in our technology-driven age, tabletop games help bring a sense of magic and community back into our world.


If you love the site, please share it with others! I have lots of gaming-related material for you to peruse and use in your own gaming sessions. If you have any questions about the site or want to contribute, just send me a message using the "Contact" page, which you can find in the site's footer.

Box art and game components for
By Jacob Tegtman September 12, 2025
Transcribed content from our recent YouTube video: https://www.youtube.com/watch?v=3N4UZQypmuo&ab_channel=EternityTTRPG Transcription What if you combined the card drafting of a deckbuilder, the equipment-sets of a loot quest, and the hidden personal goals of a role-playing adventure—wrapped up in a compact competitive board game? That’s “Journey Adventure Quest” – or JAQ, for short. This is a game my wife and I picked up at GenCon, and I’ve really enjoyed. In our first playthrough at the convention, it felt like there was a lot to wrap my head around. But we just played the game again for the first time since GenCon, and it made perfect sense – after a thorough read through the rulebook. In today’s video, I’ll break down what I like about Journey Adventure Quest, whether you as a D&D fan may like it, and some basic info on how the game is played in case you want to pick it up. JAQ is a competitive (or semi-cooperative / even solo) tabletop/ card game about fantasy heroes growing in power, fighting monsters, building gear and spell combinations, and completing quests. I’ll get into the game in more detail shortly, but for the bulk of this video I actually want to just share what I like best about the game – which are some very specific things. Whenever you get a new piece of equipment for your hero, you can “stack” it on gear of the same type. The way that you do this is to actually leave the card top and left side uncovered, which actually empowers your equipment. This style of gameplay reminds me a lot of early gaming experiences I had with D&D and other RPGs where you finally get your first +1 Longsword. Sort of, before the days of World of Warcraft style play, where you’re just getting the newer, badder glowing sword that adds 1,000 more DPS than you had before. I like that in Journey Adventure Quest, every upgrade adds to the stats of the equipment you had before, and also gives you a unique name. This style of equipment upgrade works for all the gear you’d normally have in a D&D campaign, or other RPG – chest armor, helmet, gloves, belt, weapon, and even your spells! And there’s no limit to how much you can “stack” on one equipment piece. We’ve had some games where one of us had like 8 weapons on top of each other, and was just the most insane gear you could imagine. This stacking and naming effect makes the equipment begin to feel legendary, and incredibly powerful, even though you’ve had the basis for it from the very beginning of the game. This “feel” of equipment upgrading actually isn’t all that important to the gameplay at all, to be honest haha. You’d probably think from me going on about it that it is, but to me the feel is valuable enough for why I like it so much, and it’s a great idea for even your next D&D campaign – emulating something like this. Similar to stacking equipment, you actually do the same thing with monsters. Basically, to defeat it you need both strength, and knowledge for how to bring it down. Your goal (in my cases) is to gather enough strength and knowledge through your gear to overcome the monster. But, when the monster levels up, you do the same thing with stacking the cards so they still show the top and left-hand side. The final thing I want to point out that I really like about the game is that your character actually can’t “die.” Instead of taking “damage” that get removed from your total HP – like you’d see in most games or RPGs – you instead take 1 “blood” marker for each damage you’ve taken. At the end of the game, all of your “blood” markers reduce your overall score, so you can still basically “lose” the game (kind of) from taking too much damage. But it’s really fun – and pretty funny also – that the game has these awesome equipment and monster mechanics, but you actually have no risk of character death. For a low-key, fantasy-adventure, fun/ party kind of game, I really like the low stakes nature of the game. In one game, I think my wife had like 18-blood on her character – which is a ton, by the way. She basically had 0 armor all game, didn’t even try to reduce the damage she was taking – and ended up still winning because she completed all of her character’s quests, in other ways. Super fun. So, here’s roughly how the game is played, overall. Heroes get an initial hand of 7 cards to draft equipment, spells, or other items. Equipment has a cost to it (either in coins, or blood), and you basically just choose what you want for your character. After every two rounds of drafting cards for your hero to power them up, you face monsters. Everyone who can defeat the monster – by overcoming their knowledge and HP – gets rewards, like you can see here. And then, each monster also comes with specific loot drops, which only one player may acquire, based on specific requirements for each loot card. After a monster is defeated, players returning to drafting more equipment and cards to boost their heroes. There are three total “rounds” of fighting monsters. While all of this is happening, there are personal secret adventures : each hero has some hidden goals that often require high-level spells, powerful equipment of a certain type, or certain “colors” that go into their equipment – these are known as guilds. I think of them basically just as being elemental types. Finally, there are quests , which are basically adventures that everyone’s on, to either compete for end-game prizing, or to at least hit certain thresholds where bonuses are given. At game end, the hero with the most points – which you get from a combination of equipment / monster fights / secret adventure completions/ quest/comparisons and) – actually wins the game. To summarize it, the game utilizes a very fun drafting mechanic for gear where you’re building combos, guild-sets, spells and equipment that synergize. You have progressive escalation of your very cool equipment, and monsters you battle. Players have hidden goals that add a roleplay-like flavor, and gives each player a sort of personal story they’re pursuing. And then you have multiple paths to victory: through direct confrontation/quests, through your hero’s power, through completing your secret adventures, and more. All of this a adds replayability, strategic variation, and a sense that you’re sort of roleplaying a character through this board, card game. M any D&D fans enjoy storytelling, character growth, equipment/spells, quests, sometimes hidden motivations, and fighting monster. I would say that journey adventure quest delivers on all of these. What JAQ might not deliver (for D&D fans) would be: Narrative depth, Roleplay flexibility, and stuff like Dungeon exploration and world building. So, it isn’t a replacement, obviously, but if you like D&D and want a light version of a D&D-feeling game, I think you’d have a lot of fun playing JAQ for an hour or two on some afternoon you have free. So there you have Journey Adventure Quest — a game that blends drafting, hero building, secret goals, and monster combat into something strategic, replayable – and most importantly, fun. For many D&D fans, especially those who love loot, spells, and character growth, this is worth a look. If you’ve played the game (or get a chance to), let me know your impressions. Thanks for watching—don’t forget to like, subscribe, and hit that bell so you see when we cover more hybrid adventure/ strategy games amidst our journey into D&D!
Woman in dark dress with knives, ram skull, candles, text reads
By Jacob Tegtman September 10, 2025
Transcribed content from our recent YouTube video: https://www.youtube.com/watch?v=1FWHvMzf_nI&ab_channel=EternityTTRPG Transcription We’ve reached the grand finale of our journey through Crooked Moon. If you thought alchemical barbarians and plague monks were wild—wait until you see sorcerers turning into pools of blood, warlocks who serve a cosmic jester, and wizards who poke holes in reality itself. This is where things get truly unhinged. Welcome back to Eternity TTRPG—your go-to source for all things D&D. This is Part 3 of our dive into the Crooked Moon subclasses, and the final five might just be the most dramatic of them all. We’ve got blood magic, chaotic laughter, witchcraft bargains, and two wizard paths that pull on the strings of reality. 1. Sorcerer: Crimson Sorcery Crimson Sorcerers channel raw lifeblood as their source of magic. Their powers revolve around something called the Blood Well—a reserve of vital energy they can spend to boost damage, enhance healing, or fuel their abilities. They can even dissolve into a literal pool of blood, slipping through cracks and resisting damage like some vampiric horror. As they grow stronger, they siphon life from their own body to supercharge spells, and eventually unleash Sanguine Feast—tendrils of blood draining everyone around them while restoring their own vitality. It’s absolute blood magic—a perfect subclass for anyone who wants their sorcerer to feel dangerous and unsettling. 2. Warlock: Great Fool Patron Not all horror is blood and gloom—sometimes it’s laughter. The Great Fool is a cosmic jester patron, and its warlocks wield humor as a weapon. They lash out with Vicious Mockery as a reaction, slap curses on enemies that leave them blinded by flowers, clumsy with clown shoes, or honking uncontrollably every time they move. At higher levels, their banter deals psychic damage, and eventually they can Send in the Clowns—summoning ghostly jesters that strike fear and knock enemies prone. It’s creepy circus energy meets eldritch pact, perfect for players who like their dark fantasy with a side of twisted comedy. Real quick to interrupt, we now have free downloadable D&D cards at the Eternity TTRPG website that you can use at your table. Everything from combat actions to status effects – no more flipping through your book to see exactly what being “Petrified” does to your character. You can just take our graphics, print them out at home, and slap them on your table for fun and easy reference. Grab yours today using the link, below! Now, back to the video. 3. Warlock: Horned King Patron The Horned King reminds me, of course, of the Black Cauldron! ...So I already have nostalgia for it. This class is the darker side of warlock pacts—witchcraft, maledictions, and the like. These warlocks curse enemies with agony, rot, or madness, and later channel the Horned King’s majesty by sprouting antlers and radiating an aura that charms, terrifies, or weakens foes. At their peak, they can even form a coven—bonding allies to share curses, teleport across the battlefield to each other’s sides, and spread extra necrotic damage. Thematically, this one screams ‘folk horror witchcraft’—rituals in the woods, blood pacts, and the slow transformation into something more than human. 4. Wizard: Occultist Occultists are the wizards who say, ‘knowledge at any cost.’ They reach beyond the stars, tearing open the veil of reality for forbidden secrets. Their unique mechanic is the Intrusion Die—every time they push their magic, reality might fight back, causing strange intrusions from alien realms. In exchange, they get immense power: removing concentration requirements, teleporting through scrying spells, and even flying or resisting madness. It’s the perfect subclass for players who want their wizard to feel like they’re constantly balancing brilliance with cosmic horror. 5. Wizard: Philosopher  Where the Occultist seeks forbidden knowledge, the Philosopher seeks ultimate truth. These wizards distill existence into Quintessence—a crystalline powder created from dissolving creatures or objects with their magic. That quintessence can then be spent to boost spell levels, craft magic items, or even alter the damage type of spells. Eventually, they craft a philosopher’s stone, granting them immortality, the ability to supercharge spells, and even cheat death itself. It’s the alchemical dream realized—equal parts academic and arcane. And that’s it—the full lineup of Crooked Moon’s subclasses. Fifteen in total, ranging from blood-soaked sorcerers to those we covered in previous videos, like the plague monk, and alchemical barbarian. This supplement doesn’t just remix the classic D&D classes—it drenches them in gothic horror, folk myth, and cosmic strangeness. If you’ve stuck with us through all three parts, thank you. Now I want to know—which of the fifteen subclasses across this series is your absolute favorite? Drop it in the comments, and let’s see which one takes the crown. And if you enjoyed this series, be sure to like, subscribe, and share it with your table—because who knows, maybe your next campaign could use a paladin bent on the inquisition, or a spectral ranger.
Soldier aims weapon in war-torn city street. Buildings burning, smoke rising; other soldiers advance in rubble-filled road.
By Jacob Tegtman September 9, 2025
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