Gyarados

Ability · Delta Reactor

As long as any Stadium card with Holon in its name is in play, each of your Pokémon that has δ on its card does 10 more damage to the Defending Pokémon (before applying Weakness and Resistance).

M · C

Flip a coin. If heads, discard an Energy card attached to the Defending Pokémon.

L · M · C · C · C

Weakness: Lightning · Resistance: none · Retreat: 2