A Basic, SP Pokemon Card of type Darkness with the title Hydreigon C and 110 HP of rarity Promo from the set SWSH Black Star Promos.  It has the attack Bite with the cost Colorless, Colorless, the energy cost 2 and the damage of 30. It has the attack Berserker Blade with the cost Darkness, Darkness, Colorless, the energy cost 3 and the damage of 100 with the description: This attack also does 20 damage to 2 of your opponent's Benched Pokemon. (Don't apply Weakness and Resistance for Benched Pokemon.) It has weakness against Grass 2. 
Hydreigon C