Shadowborn Demon [Magic 2014] Vampire Warrior If either a "Gravekeeper's" monster

If either a "Gravekeeper's" monster or "Necrovalley" is not on the field

Set: Rivals of Ixalan Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {4}{R}{R} Whenever Etali

that target loses ATK/DEF equal to the original ATK/DEF or that banished monster

Set: Commander 2013 Type: Land Rarity: Common Bojuka Bog enters the battlefield tapped

as an additional Normal Summon

Shadowborn Demon [Magic 2014] Vampire Warrior If either a "Gravekeeper's" monsterSet: Magic 2014 Type: Creature Demon Rarity: Mythic Cost: {3}{B}{B} Flying When Shadowborn Demon enters the battlefield, destroy target non Demon creature. At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature.