Never cared much for the random OR effect troops and this one is no exception. Main problem with this one being that the three different random effects accomplish three different things and thus you’d likely alter your target if you knew which one you are getting and two of them are at odds with the third, since the transform will wipe out any stat debuffs. On defense, the unblockable transform is annoying enough to be a functional instakill and force a retreat, but on offense, you still have to kill the transformed troop, but the transform is the most unique thing she has (and magic debuffing has been proven not to be much of a threat reducer amongst many meta troops). I’m not sure what to do with her while keeping her identity in a way that wouldn’t be both not really all that effective to use but annoying to fight against.
If I were to give her a redesign, I’d change her to “Deal [Magic + 3] damage to an enemy, and double if they are a Human. Halve their attack and magic. If the enemy dies, summon a Giant Toad” Increase her magic to about 12 at level 20, for 25-50 spell damage in addition to a sizeable debuff. Thematically, you’d be basically still “cursing and turning enemies into frogs”, but the frog would appear on your team instead and she could at least consistently do something.