Aspect of Flame

You and all the possessions on your person become flame. While in this state all attacks against you have disadvantage to hit. You gain resistance to fire damage for the duration of the spell, if you are already resistant, you do not gain immunity. While in this state you can pass through small cracks and crevasses due to your gaseous state. If you pass through the same space occupied by a creature, that creature takes 2d6 fire damage. You cannot cast spells while in this state.

When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each spell slot above 3rd.