Essence of Ice

You bless a target within range with the pure essence of Ice. The blessed target is surrounded by a shield of protective ice, granting it resistance to all damage except for psychic and fire damage, and granting it temporary hit points equal to the caster's casting ability modifier + 5d4. The target's speed is also halved for the duration. The spell ends after 1 minute has passed, after the target receives damage that depletes all the temporary hitpoints made by the spell, or if the spell is cast again before the duration ends.

At higher levels. Increases the additional hitpoints added by 2d4 for each spell slot used above 3rd.