Tapu Koko GX 
3 in stock.
Set: SM - Guardians Rising Type: Lightning Rarity: Ultra rare Retreate Cost: 2[1LL] Sky-High Claws (130)[1LL] Tapu Thunder GX (50x)
This attack does 50 damage times the amount of Energy attached to all of your opponent's Pokemon. (You can't use more than 1 GX attack in a game.)