Luffy OP05-060, Leader Zoro-Juurou OP05-067, Rare Trafalgar Law OP05-069, Super Rare Trafalgar Law OP05-069, Super Rare (Manga) Eustass Captain Kid OP05-074, Super Rare Eustass Captain Kid OP05-074, Super Rare (Manga) Mansherry OP05-088, Rare Rebecca OP05-091, Super Rare Rob Lucci OP05-093, Super Rare Enel OP05-098, Leader Enel OP05-100, Super Rare Enel OP05-100, Special Gedatsu OP05-102, Rare Kaido OP05-118, Secret Rare Monkey D
If you have more than seven cards in your hand during the cleanup step, you must discard down to seven
Im also curious if theres room to experiment with backup on noncreature permanents (which might not work under the current rules text)
However, he's probably most useful as a voltron commander counter thanks to his activated ability, which can remove important keywords from opposing permanents