Altar of the Brood [Khans of Tarkir] Standard As long as enchanted creature

As long as enchanted creature is blue

When Oathkeeper

if no creatures are on the battlefield

Set: Urza's Saga Type: Creature — Shapeshifter Rarity: Rare Cost: {3}{U}{U} {U}: Untap Morphling

Set: Antiquities Type: Creature — Spirit Rarity: Uncommon Cost: {1}{B}{B} {T}: Until your next upkeep

Altar of the Brood [Khans of Tarkir] Standard As long as enchanted creatureSet: Khans of Tarkir Type: Artifact Rarity: Rare Cost: {1} Whenever another permanent enters the battlefield under your control, each opponent mills a card. Supplicants offer flesh and silver, flowers and blood. The altar takes what it will, eyes gleaming with unspoken promises.