Zombie Master [Limited Edition Beta] Magic 2015 It can't be regenerated

It can't be regenerated

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {B} Search your library for a card

Set: Unlimited Edition Type: Creature — Human Knight Rarity: Rare Cost: {2}{W}{W} {W}{W}

While doing so

Zombie Master [Limited Edition Beta] Magic 2015 It can't be regeneratedSet: Limited Edition Beta Type: Creature Zombie Rarity: 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.