Gyarados

W

This attack does 10 damage to each of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

C · C

Does 20 damage times the number of damage counters on all of your Magikarp.

W · W · C · C

If the Defending Pokémon already has at least 2 damage counters on it, this attack does 50 damage plus 50 more damage.

Weakness: Lightning · Resistance: none · Retreat: 2