Witch Spell Crucible, The Real Hero

[Shenennigans]

Get an upgraded spell slot, Duplicate, and Crucible (fury spell in a prepared slot isn't bad to help this). Upgraded Crucible gives FOUR burning dice, some of which will be more of the slot to put down more Crucibles. Duplicate your Crucible (put it in a slot 4 or higher). Taking a bit of burning damage, you can do basically infinite damage by throwing burning dice with this. I ignored this spell for a long time until I realized it's upgraded version was ♥♥♥♥♥♥♥ OP.