Onix GX 36/68 - Hidden Fates Holofoil

Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.

During your opponent's next turn, this Pokémon takes 100 less damage from attacks (after applying Weakness and Resistance). (You can't use more than 1 GX attack in a game.)

Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.