Hyperburning Spell

You are able to channel incredible power into spells that use fire to damage foes. You are able to make a spell of 1st level or higher that deals fire damage deal the maximum possible damage (for example instead of rolling 8d6 damage you would deal 48 damage). However, when you use this, it harms you. You take 1d10 unavoidable fire damage for each level of the spell whose power was maximized (a 3rd level spell would deal 3d10 damage, a 5th level spell 5d10 damage, etc). Because it is unavoidable, this fire damage ignores all resistances and immunities that you might have to fire damage.