Armor of Ice

2nd-level abjuration

Classes: Druid, sorcerer, warden
Casting Time: 1 action
Range: Self
Components: V, S
Duration: 10 minutes

Your body becomes encased in a thick layer of ice, with fractal protrusions that extend outwards and end in sharp spikes. Until the spell ends, your AC can’t be less than 15, regardless of what kind of armor you are wearing, and your speed is reduced by 10 feet. Whenever a creature within 5 feet of you hits you with a melee attack, it takes 1d4 piercing and 1d4 cold damage.

You can end this spell early as a bonus action.