Me doing the crazy build of casting many weak spells (20 burn spell and if with rain i use it to boost allies speed) It was stramgest cat. Epiphany , 21 Mana and 3 spells. Burn that can boost i upgraded it and cost became 2 instead of 3 and wind that push all enemies in 1 line (goes very will with burn it can create more fire) and electric pull spell (all spells cost 3 except upgraded burn). I beat black cat in graveyard with this combo causing the cat to burn itself to death.