Vinsmoke Niji (R OP06-065)

[On Play] If the number of DON!! cards on your field is equal to or less than the number on your opponent's field, choose one:
• K.O. up to 1 of your opponent's Characters with a cost of 2 or less.
• Return up to 1 of your opponent's Characters with a cost of 4 or less to the owner's hand.
Rare
From the One Piece Card Game set Wings of the Captain