Mudkip (33/168) [Sun & Moon: Celestial Storm] Lord of the Tachyon Galaxy Negate the activation of your

Negate the activation of your opponent's Spell Card and Destroy it

Set: Turbo Pack: Booster Seven Card type: Synchro/Effect Monster Rarity: Ultimate Rare Attack: 2200 Defense: 1200 1 Tuner + 1 or more non-Tuner monsters At the start of the Damage Step

this card loses ATK equal to the difference

Set: The Legend of Blue Eyes White Dragon Card type: Normal Spell Rarity: Rare Attack: 0 Defense: 0 Draw 2 cards from your Deck

and if they have the declared card in their hand

Mudkip (33/168) [Sun & Moon: Celestial Storm] Lord of the Tachyon Galaxy Negate the activation of yourSet: Sun & Moon: Celestial Storm Type: Water Rarity: Common Retreat cost: Colorless