Whir of Invention [Aether Revolt Prerelease Promos] Homunculus Set: Gatecrash Type: Creature —

Set: Gatecrash Type: Creature — Spirit Rarity: Rare Cost: {3}{B} Extort (Whenever you cast a spell

{T}: Exchange target opponent's life total with Tree of Perdition's toughness

Whenever an opponent sacrifices a nontoken permanent

*Discourse on Method*

the Firemind deals 1 damage to any target

Whir of Invention [Aether Revolt Prerelease Promos] Homunculus Set: Gatecrash Type: Creature —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.