Pokémon Trading Card Game - Lanturn - EX: Hidden Legends 38

Poké-Power: Energy Grounding
Once during your opponent's turn, when any of your Pokémon is Knocked Out by your opponent's attacks, you may use this power. Choose a basic Energy card discarded from the Knocked Out Pokémon and attach it to Lanturn. You can't use more than 1 Energy Grounding each turn.

Lightning Strike 50
You may discard all Energy attached to Lanturn. If you do, this attack's base damage is 90 instead of 50.