Armor of Agathys

  • Level & School
    1st-level abjuration
  • Casting Time
    Bonus action
  • Range
    Self
  • Components
    V, S, M (a shard of blue glass)
  • Duration
    1 hour
  • Classes
    Warlock

Protective magical frost surrounds you. You gain 5 Temporary Hit Points. If a creature hits you with a melee attack roll before the spell ends, the creature takes 5 Cold damage. The spell ends early if you have no Temporary Hit Points.

Using a Higher-Level Spell Slot. The Temporary Hit Points and the Cold damage both increase by 5 for cach spell slot level above 1.

Armor of Agathys 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version adds that the spell ends early if you have no Temporary Hit Points, and clarifies that the Cold damage occurs if a creature hits you with a melee attack roll before the spell ends. Both versions increase damage and temporary hit points by 5 per spell slot above 1st level.