Whir of Invention (SLD) #311 [EN/F] s/o

{X}{U}{U}{U} · Instant · 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. · "Magic hat, I'm gonna be frank. What we need now is a twenty-ton tank!" · Illustrated by Tyler Walpole · Secret Lair Drop #311 · EDHREC rank 1308 · Magic: The Gathering, MTG