Yawgmoth Demon [Antiquities] Arcane you may pay {4}

you may pay {4}

Set: Kaladesh Prerelease Promos Type: Enchantment Rarity: Mythic Cost: {3}{U}{U} Whenever you cast an instant or sorcery spell

Set: Aether Revolt 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}

Untap all creatures you control

Yawgmoth Demon [Antiquities] Arcane you may pay {4}Set: Antiquities Type: Creature Demon Rarity: Rare Cost: {4}{B}{B} Flying (This creature can't be blocked except by creatures with flying or reach.) First strike (This creature deals combat damage before creatures without first strike.) At the beginning of your upkeep, you may sacrifice an artifact. If you don't, tap Yawgmoth Demon and it deals 2 damage to you.