Mewtwo (3) [Wizards of the Coast: Black Star Promos] Link/Effect during your Standby Phase: You

during your Standby Phase: You can target 1 Normal Monster in your Graveyard

You can send "Umi" you control to the Graveyard to send all cards in both players' hands and on the field to the Graveyard

this card gains ATK equal to the difference

Set: OTS Tournament Pack 17 Card type: Xyz/Effect Monster Rarity: Ultimate Rare Attack: 2500 Defense: 2000 2 Level 4 monsters When a monster declares an attack: You can detach 1 material from this card

Set: XY: Ancient Origins Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Mewtwo (3) [Wizards of the Coast: Black Star Promos] Link/Effect during your Standby Phase: YouSet: Wizards of the Coast: Black Star Promos Type: Psychic Rarity: Black Star Promo Retreat cost: Colorless,Colorless