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."
He controlled the zombies even before his own death; now nothing can make them betray him.
![Zombie Master (Future Sight) [Mystery Booster 2]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/files/e2701a33-05c5-514b-831d-d6d30ad840da.png?v=1737252811&width=1445)