Nightmare [Limited Edition Beta] Avatar Return target permanent to its

Return target permanent to its owner's hand

put that many vitality counters on Living Artifact

They each have flying and "This creature can't be enchanted

if that creature was destroyed this way

put all cards exiled with Knowledge Vault into their owner's graveyard

Nightmare [Limited Edition Beta] Avatar Return target permanent to itsSet: Limited Edition Beta Type: Creature Nightmare Horse Rare Cost: {5}{B} Flying (This creature can't be blocked except by creatures with flying or reach.) Nightmare's power and toughness are each equal to the number of Swamps you control. The Nightmare arises from its lair in the swamps. As the poisoned land spreads, so does the Nightmare's rage and terrifying strength.