Whir of Invention [Aether Revolt Prerelease Promos] Trainer Set: Commander 2014 Type: Instant

Set: Commander 2014 Type: Instant Rarity: Rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

{2}{G}{G}{G}: Elf creatures you control get +3/+3 and gain trample until end of turn

Set: Mercadian Masques Type: Creature — Spirit Rarity: Rare Cost: {1}{B}{B} At the beginning of your upkeep

Set: Beta Edition Type: Creature — Avatar Rarity: Rare Cost: {3}{G}{G}{G} As long as Gaea's Liege isn't attacking

is dealt damage

Whir of Invention [Aether Revolt Prerelease Promos] Trainer Set: Commander 2014 Type: InstantSet: 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.