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.
![Zombie Master [Alpha Edition] MTG Single Magic: The Gathering](http://www.undiscoveredrealm.com/cdn/shop/products/zombie-master-alpha-edition-mtg-single-magic-the-gathering-423122_1024x1024.jpg?v=1693687662)
