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 Whir of Invention | |
|---|---|
| Mana cost |   |
| Mana value | 3 |
| Type | Instant |
| Power / Toughness | — |
| Rarity | Rare |
| Price | $7.05 |
| Rules text | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for  .)Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. |