Casting Time: 1 bonus action
Range: Self
Components: V, S, M
Duration: 1 hour
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.
The Temporary Hit Points and the Cold damage both increase by 5 for each spell slot level above 1.
Material Component:
a shard of blue glass
Verbal Component:
Armatus di Agathi
Verbal Component (Alternative):
In Agathys' name, let vengeance unfold, armored now in bitter cold
Class: Warlock
Domain: Cold
Tags: Buff, Damage, Warding
Source: Player's Handbook (2024) (page 243)
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Other Planes and Effects
Below is information about this spell as it relates to other planes and area of effects (i.e. underwater). Some of the information is pulled official D&D sources (such as books and the twitter feeds of D&D officials), but other information is derived from forums and online discussions. As always, it is up to the DM to decide how they wish to handle spell effects.
Underwater - Verbal Component
Official rules have been verified by Jeremy Crawford - "No rule prohibits verbal components from working underwater. Keep in mind that if you're talking, you're not holding your breath." Hence, while submerged underwater and holding its breath, a creature can cast a spell that requires a verbal component. After casting the spell, if the creature can't breathe underwater, it immediately runs out of breath. The creature can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round).
