Mewtwo V-Union (SWSH159) [Sword & Shield: Black Star Promos] SV103 shuffle all monsters your opponent

shuffle all monsters your opponent controls into the Deck

Set: Astral Pack 4 Card type: Tuner Monster Rarity: Super Rare Attack: 1300 Defense: 400 If you control a "Blackwing" monster other than Blackwing - Gale the Whirlwind

Lord of Phantasms

Set: Pharaonic Guardian Card type: Continuous Trap Rarity: Common Attack: 0 Defense: 0 You can activate this card's effect when your opponent attacks

Most of them simply split back up into the monsters you used to make them so you can switch your strategy on the fly

Mewtwo V-Union (SWSH159) [Sword & Shield: Black Star Promos] SV103 shuffle all monsters your opponentSet: Sword & Shield: Black Star Promos Type: Psychic Rarity: Promo Retreat cost: Colorless,Colorless