![Whir of Invention [Mystery Booster]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/whir-invention-mystery-booster.webp)
Description
| Set: | Mystery Booster |
| 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.
![Flooded Strand [Khans of Tarkir]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/flooded-strand-khans-tarkir.webp)
![Eunuchs' Intrigues [Portal Three Kingdoms]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/eunuchs-intrigues-portal-three-kingdoms.webp)
![Underground River [Tenth Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/underground-river-tenth-edition.webp)
![Living Artifact [Beta Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/living-artifact-beta-edition.webp)
![Oath of Druids [Judge Gift Cards 2001]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/oath-druids-judge-gift-cards-2001.webp)
![Zodiac Monkey [Portal Three Kingdoms]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/zodiac-monkey-portal-three-kingdoms.webp)
![Blood Crypt [Return to Ravnica]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/blood-crypt-return-to-ravnica.webp)
![Forgotten Creation [Shadows over Innistrad Prerelease Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/forgotten-creation-shadows-over-innistrad-prerelease-promos.webp)