Whir of Invention [Aether Revolt Prerelease Promos] CRU025 Set: Platinum: Base Set Type:

Set: Platinum: Base Set Type: Water Rarity: Ultra Rare Retreat cost: Colorless

Set: Diamond & Pearl: Black Star Promos Type: Item Rarity: Black Star Promo

" —Jarsyl

Set: EX: Crystal Guardians Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

Whir of Invention [Aether Revolt Prerelease Promos] CRU025 Set: Platinum: Base Set Type: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.