Whir of Invention [Aether Revolt Prerelease Promos]

Whir of Invention [Aether Revolt Prerelease Promos]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.

Set: Fifth Edition Type: Instant Rarity: Uncommon Cost: {R} Choose one —

then destroy target creature of an opponent's choice

Rofellos is an excellent warrior and excellent company

remove a time counter

Whenever Ma Chao

" —Seneca

Each opponent's maximum hand size is reduced by seven

flowing with waters more ancient than the world itself

Incensed by their opponents' unrelenting taunts

Set: Gateway 2007 Type: Artifact Rarity: Rare Cost: {2} {T}: Add {C}

Set: Mirrodin Type: Artifact Rarity: Rare Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it

that player draws an additional card