Darkness of Eternity Dark Ritual could do some pretty obscene things, but itll also feel pointless if you flood out or the game goes long
Rather than using the Transform mechanic, it could just have a buffing effect that applies to itself throughout the fight, possibly being powered by killing Legendary Creatures
You can also use Befuddle to bounce Madam Mim, Snake back to your hand, allowing you to then bounce a higher-cost character like Merlin, Goat back to your hand with Mim
Imagine an opponent casting a Craterhoof BehemothCraterhoof Behemoth only to move to combat and have all their creatures tapped down
It can be intimidating at first if you look at all of the markings on a single card, but once you break through that, the rules for Disney Lorcana are surprisingly straightforwardand fit on a single sheet of paper
This means planning ahead to make sure your characters can challenge and not get banished, or force your opponent to challenge and leave a damaged character out