1st-level · Transmutation
Casting Time 1 reaction, which you take when you are hit by an attack
Range Self
Components V, S
Duration Up to 1 minute
Classes Cleric, Druid, Warlock
A rocky coating covers your body, protecting you. Until the start of your next turn, you gain 5 temporary hit points and a +2 bonus to Armor Class, including against the triggering attack.
At the start of each of your subsequent turns, you can use a bonus action to extend the duration of the AC bonus until the start of your following turn, for up to 1 minute.
Source: Tome of Heroes · OGL/Open