![Whir of Invention [Mystery Booster]](https://cdn.shopify.com/s/files/1/0451/3388/9694/files/e6e08ac3-d01a-53bc-ba9d-e5f54f3b5ac7.jpg?v=1768426797)
Whir of Invention [Mystery Booster]
| Set: | Mystery Booster |
| Type: | Instant |
| Rarity: | Rare |
| Cost: | XUUU |
| Colors: | 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.
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.