A VMAX Pokemon Card of type Lightning with the title Jolteon VMAX and 300 HP of rarity Promo evolved from Jolteon V from the set SWSH Black Star Promos.  It has the attack Max Thunder Rumble with the cost Lightning, Colorless, the energy cost 2 and the damage of 100 with the description: This attack also does 100 damage to 1 of your opponent's Benched Pokemon that has any damage counters on it. (Don't apply Weakness and Resistance for Benched Pokemon.) It has weakness against Fighting 2. 
Jolteon VMAX