
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."
Zombie Master has 19 printings, first in Unlimited Edition (1993). EDHREC ranks it #2,674 among Commander cards. 1 public deck on TCG runs it.
Cards that show up in the same decks on EDHREC.