Sewerdreg {3}{B}{B}
Creature — Spirit
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
Sacrifice this creature: Exile target card from a graveyard.
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Cards that do something similar expected a card that isn't here?
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Digsite Conservator 81%
$0.15#18713
"Sacrifice this creature: Exile up to four target cards from a single graveyard. Activate only as a sorcery."