Dreadful Mirelord

Swampwalk (This creature can’t be blocked as
long as the defending player controls a Swamp.)

Deathly Reclamation {1}{b} (Whenever a creature dies, return target creature card from a graveyard to your hand.)

{4}{b}{b}: Exile all creature cards from all graveyards. For each card exiled this way, create a 1/1 black Skeleton token with deathtouch.

"The swamp's embrace is eternal, and the
Mirelord ensures none escape its grasp."