Whir of Invention [Aether Revolt Prerelease Promos] Planechase 2012 Set: Antiquities Type: Land —

Set: Antiquities Type: Land — Urza’s Tower Rarity: Uncommon {T}: Add {C}

where X is 2 plus the sacrificed creature's converted mana cost

Set: Unlimited Edition Type: Sorcery Rarity: Rare Cost: {2}{U} Each player shuffles their hand and graveyard into their library

Set: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

Set: Commander 2011 Type: Enchantment Rarity: Rare Cost: {3}{R} Your opponents can't search libraries

Whir of Invention [Aether Revolt Prerelease Promos] Planechase 2012 Set: Antiquities Type: Land —Set: Aether Revolt Prerelease Promos 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.