Whir of Invention
[Aether Revolt Prerelease Promos ]

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MINT/NM Foil - $23.60

SP Foil - $22.40

MP Foil - $21.20

HP Foil - $18.90

Aether Revolt Prerelease Promos Blue Commander Duel Explorer Foil Gladiator Historic Historicbrawl Instant Legacy Modern Oathbreaker Penny Pioneer Rare Vintage

Description

Set:	Aether Revolt Prerelease Promos
Type:	Instant
Rarity:	Rare
Cost:	{X}{U}{U}{U}

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.