Son Gohan : Adolescence (SB02-026) [Manga Booster 02 Release Event Cards]

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[Permanent] If your Leader has both "Saiyan" and "Earthling" in its special traits and you have a "Gotenks" with a cost of 4 in your Battle Area, reduce the cost of this card in your hand by 2.
[On Play] During this turn, the next time you use an Extra, reduce the cost by U.