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.
NM-Mint - $9.40
Lightly Played - $8.40
Moderately Played - $7.50
Heavily Played - $6.60
Damaged - $4.70
NM-Mint Non English - $9.40
Lightly Played Non English - $8.40
Moderately Played Non English - $7.50
Heavily Played Non English - $6.60
Damaged Non English - $4.70