The Whir of Invention promo card (49p) from the 2020 Magic: The Gathering Aether Revolt Promos set. This instant spell features the improvise mechanic and a mana cost of {X}{U}{U}{U}. The Whir of Invention promo card (49p) from the 2020 Magic: The Gathering Aether Revolt Promos set. This instant spell features the improvise mechanic and a mana cost of {X}{U}{U}{U}.
2020 • Magic: The Gathering • Aether Revolt Promos
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| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$6.81 | Guide Estimate | -0.1% | ||
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Oct 12, 2026
The Whir of Invention promo card (49p) from the 2020 Magic: The Gathering Aether Revolt Promos set offers a distinct gameplay experience through its unique casting cost and ability. Classified as a Rare card within the PAER set code, this instant spell requires a mana cost of {X}{U}{U}{U} and has a mana value of 3. The card's design is attributed to artist Christine Choi, adding to its identity among collectors of the Aether Revolt era. Gameplay for this card centers on the improvise mechanic, allowing players to tap artifacts to help pay for the spell's generic mana. Once cast, the card enables the player to search their library for an artifact card with a mana value of X or less, put it onto the battlefield, and then shuffle their library. This functionality makes it a strategic choice for decks focusing on artifact synergy. The 2020 Aether Revolt Promo card Whir of Invention (49p) is an Instant with mana cost {X}{U}{U}{U}. The 49p card number places this variant within the promotional subset, distinguishing it from the base checklist. As a blue-colored card with a color identity of U, it fits into specific deck archetypes that prioritize artifact acceleration. Its rules text allows you to search your library for an artifact card with mana value X or less, put it onto the battlefield, and then shuffle.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Whir of Invention
Game
Magic: The Gathering
Rarity, print treatment, and game-specific stats for this card.
Rare
Christine Choi
Card Stock
English
{X}{U}{U}{U}
Instant
U
Abilities, attacks, oracle text, and flavor text printed on the card.
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.
Notable collectible traits associated with this card profile.
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