Mindslaver [Mystery Booster] Elemental Rogue but someone else had developed

but someone else had developed a keen interest in them

Set: Future Sight Type: Instant Rarity: Rare Cost: {0} Destroy target nonblack creature

Set: XY: Primal Clash Type: Dragon Rarity: Holo Rare Retreat cost: Colorless

Set: The Legend of Blue Eyes White Dragon Card type: Normal Spell Rarity: Super Rare Attack: 0 Defense: 0 Destroys all monsters on the field

Mindslaver [Mystery Booster] Elemental Rogue but someone else had developedSet: Mystery Booster Type: Legendary Artifact Rarity: Rare Cost: {6} {4}, {T}, Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for the player.)