Karn's Touch [Mercadian Masques] SM23 you can activate this effect

you can activate this effect to make both players send cards from their hand to the Graveyard until they have 4 cards

return that monster to the hand

Set: Legendary Duelists: Immortal Destiny Card type: Fusion/Effect Monster Rarity: Common Attack: 2700 Defense: 1900 1 Fusion Monster + 1 DARK monster Once per turn (Quick Effect): You can target 1 face-up monster your opponent controls

up to the number of Machine monsters you control

Ancient Guardians will also include classic cards for Pendulum strategies like Luster Pendulum

Karn's Touch [Mercadian Masques] SM23 you can activate this effectSet: Mercadian Masques Type: Instant Rarity: Rare Cost: {U}{U} Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn. (It retains its abilities.)