one piece prb01 booster box such as Mihawk from OP One Piece Card Game PRB-01

Unnatural Selection If you're interested in changing specific Creatures and not altering every single one you control, you could explore Unnatural Selection

Tons of details about Reality Fracture were dropped, and we even got to see a bunch of The Hobbit spoilers

See the full ranking in the Best cards section above

Unlike Wellwisher this doesn't need any infrastructure to work, and it doesn't tap, so you can attack, block, grab equipment, and more

Demonic Pact Demonic Pact offers a selection of advantageous effects before its deadly drawback

This could make for some truly massive decks, but an interesting, and entertaining, game