Gum-Gum UFOJudge Pack Vol. 6

[Main] Give up to 1 of your opponent's Characters −4000 power during this turn. Then, if you have 2 or less Life cards, up to 1 of your Leader or Character cards gains +1000 power during this turn.

[Trigger] K.O. up to 1 of your opponent's Characters with 3000 power or less.