---
name: "Whir of Invention"
mana_cost: "{X}{U}{U}{U}"
cmc: 3
type_line: "Instant"
colors: ["U"]
color_identity: ["U"]
keywords: ["Improvise"]
set: "AER"
set_name: "Aether Revolt"
collector_number: "49"
rarity: "rare"
artist: "Christine Choi"
oracle_id: "152b91c9-cc07-4ca8-944f-9bc2242a2283"
canonical_url: "https://avascry.com/printing/whir-of-invention-aer"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Whir of Invention
- **Mana Cost:** `{X}{U}{U}{U}` (CMC: 3)
- **Type:** Instant
- **Keywords:** Improvise

## Oracle Text
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.

## Top 4096-Dim Neural Synergies
1. [Arc Reactor](/printing/arc-reactor-msh.md) — Artifact
2. [Saheeli's Directive](/printing/saheelis-directive-pz2.md) — Sorcery
3. [Reverse Engineer](/printing/reverse-engineer-ha5.md) — Sorcery
4. [Fabricate](/printing/fabricate-sld.md) — Sorcery
5. [Artificer's Intuition](/printing/artificers-intuition-5dn.md) — Enchantment
6. [Archway of Innovation](/printing/archway-of-innovation-mh3.md) — Land

## Printing Details
- **Set:** Aether Revolt (AER) #49
- **Rarity:** Rare
- **Artist:** Christine Choi
- **Total Printings:** 28 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `legal` | Pioneer: `legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `legal`