Your search for "Hydreigon C - SWSH138" revealed the following:
Hydreigon C lv.61 - SWSH138 - Holo Promo from Sword & Shield Promos, available at 401 Games Canada. Rarity: Promo Finish: Holofoil Card Text:[2] Bite (30)[1DD] Berserker Blade (100)This attack also does 20 damage to 2 of your opponent's Benched...