Whir of Invention [Aether Revolt Prerelease Promos] Merfolk Warrior you may pay {W/B}

you may pay {W/B}

(Additional mana in the cost may be paid with any color of mana or colorless mana

Set: Judge Gift Cards 2013 Type: Sorcery Rarity: Rare Cost: {1}{W}{B} Destroy target permanent

Set: Unlimited Edition Type: Sorcery Rarity: Rare Cost: {1}{B}{B} Remove Demonic Attorney from your deck before playing if you're not playing for ante

Wei General attacks

Whir of Invention [Aether Revolt Prerelease Promos] Merfolk Warrior you may pay {W/B}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.