Arena of the Ancients [Legends] Atog if you had another creature

if you had another creature enter the battlefield under your control last turn

Set: Alpha Edition Type: Artifact Rarity: Uncommon Cost: {1} Whenever a player casts a blue spell

Set: Alpha Edition Type: Instant Rarity: Uncommon Cost: {1}{B} You gain life equal to the damage dealt to you this turn

Its scales contain the essence of thousands of lotus blooms

Set: Kaladesh Prerelease Promos Type: Legendary Artifact — Vehicle Rarity: Mythic Cost: {5} Flying

Arena of the Ancients [Legends] Atog if you had another creatureSet: Legends Type: Artifact Rarity: Rare Cost: {3} Legendary creatures don't untap during their controllers' untap steps. When Arena of the Ancients enters the battlefield, tap all legendary creatures.