Snake Dance OP07-055 (500 Years in the Future)

[Counter] Up to 1 of your Leader or Character cards gains +4000 power during this battle. Then, return up to 1 of your Characters to the owner's hand. [Trigger] You may return 1 of your Characters to the owner's hand: Return up to 1 of your opponent's Characters with a cost of 5 or less to the owner's hand.