4th Level Arcane Evocation
Casting Time: 1 action
Range: self
Components: V, S, M (a bit of phosphorus or a firefly)
Duration: 10 minute
Thin and wispy flames wreathe your body for the duration, shedding bright light in a 2 sqr. (3m) radius and dim light for an additional 2 sqr. (3m). You can end the spell early by using an action to dismiss it.
The flames provide you with a warm shield or a chill shield, as you choose. The warm shield grants you resistance to cold damage, and the chill shield grants you resistance to fire damage.
In addition, whenever a creature within 1 sqr. (2m) of you hits you with a melee attack, the shield erupts with flame. The attacker takes 2d8 fire damage from a warm shield, or 2d8 cold damage from a cold shield.