World Breaker [Oath of the Gatewatch Prerelease Promos] Planeshift if Clockwork Avian attacked or

if Clockwork Avian attacked or blocked this combat

Does it reflect the future that once was or the past that can never be

When there are no creatures on the battlefield

When Isperia's Skywatch enters the battlefield

If you would draw a card except the first one you draw in each of your draw steps

World Breaker [Oath of the Gatewatch Prerelease Promos] Planeshift if Clockwork Avian attacked orSet: Oath of the Gatewatch Prerelease Promos Type: Creature Eldrazi Rarity: Mythic Cost: {6}{G} Devoid (This card has no color.) When you cast this spell, exile target artifact, enchantment, or land. Reach {2}{C}, Sacrifice a land: Return World Breaker from your graveyard to your hand. ({C} represents colorless mana.)