Whir of Invention Tweet Buy This Product Details Color: Blue Card Text: Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. Rarity: R Cost: XUUU Card Type: Instant Artist: Christine Choi Name: Whir of Invention Finish: Regular Card Number: 42 Set Name: Heads I Win, Tails You Lose
