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New ability: Berserk Gene. Gives a 50% damage boost to moves with secondary effects, but ignores that effect. Basically a better Sheer Force. Regular and Mewtwo Y have this, and it replaces Pressure. Mega Mewtwo X gets Guts.
Psystrike now has a 10% chance to lower Defense by one stage. Mewtwo gets the following additions to its movepool: Swords Dance, Nasty Plot, Earth Power, and Close Combat.
