Mindslaver [Mirrodin] XY124 You may spend blue mana

You may spend blue mana as though it were mana of any color to pay the activation costs of Quicksilver Elemental's abilities

Set: Jungle Unlimited Type: Water Rarity: Holo Rare Retreat cost: Colorless

Set: Signature Spellbook: Jace Type: Instant Rarity: Rare Cost: {U} Search your library for an instant or sorcery card

Set: Aquapolis Type: Colorless Rarity: Secret Rare Retreat cost: Colorless

This card can only be Special Summoned by controlling 3 or more face-up Continuous Spell Cards

Mindslaver [Mirrodin] XY124 You may spend blue manaSet: Mirrodin 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.)