Silvally GX 
1 in stock.
Set: SM - Ultra Prism Type: Colorless Rarity: Ultra rare Retreate Cost: 2 Turbo Drive (120)
Attach a basic Energy card from your discard pile to 1 of your Benched Pokemon. Rebel GX (50x)
This attack does 50 damage for each of your opponent's Benched Pokemon. (You can't use more than 1 GX attack in a game.)