The issue is that she’s only really fast for her mana drain. The bombs being on a 3 turn delay means her damage is average at best (and worse if you’re not careful with placement).
Maybe my eyes play a trick on me, but i today faced a fully maxed Carol in raid tournament and could swear that her bomb did more damage to the Center than nearby:
So no way i could retry to reconfirm if correct or not.
İ must say that her damage for a 4* is not that bad on defense.
She has quite some durability and that is before troops are applied.
İ am actually considering level her. Because sorcerer emblems i have alot and she seems decent in 4* star tournaments.