Cell's Kamehameha (Limited Pack 26-27 WAVE2) [Fusion World Tournament Cards]

[Permanent] If your Leader is "Cell" and you used a card from your Battle Area in a combo during this turn, reduce the cost of this card in your hand by 2.

[Activate Main] Choose up to 1 Battle Card in your opponent's Battle Area with a cost less than or equal to the combined cost of the "Cell" in your Battle Area and KO it.