Zombie Master [Limited Edition Alpha] Dragon Spirit "Avacyn emerged from the broken

"Avacyn emerged from the broken Helvault

Set: Kaladesh Inventions Type: Artifact Mythic Cost: {3} You may choose not to untap Vedalken Shackles during your untap step

Set: Amonkhet Invocations Type: Instant Mythic Cost: {B} Add {B}{B}{B}

Set: Commander 2013 Type: Land Rarity: Rare {T}: Add {C}

Zombie Master [Limited Edition Alpha] Dragon Spirit "Avacyn emerged from the brokenSet: Limited Edition Alpha Type: Creature Zombie Rare Cost: {1}{B}{B} Other Zombie creatures have swampwalk. (They can't be blocked as long as defending player controls a Swamp.) Other Zombies have "{B}: Regenerate this permanent." They say the Zombie Master controlled these foul creatures even before his own death, but now that he is one of them, nothing can make them betray him.