Silvally-GX

Once during your turn (before your attack), you may draw cards until you have 5 cards in your hand.

If you played a Supporter card from your hand during this turn, this attack does 70 more damage.

If your opponent's Active Pokémon is an Ultra Beast, it is Knocked Out. (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.