At the beginning of each end step, put a corpse counter on Scavenging Ghoul for each creature that died this turn.
Remove a corpse counter from Scavenging Ghoul: Regenerate Scavenging Ghoul.
At the end of each turn, put a corpse counter on Scavenging Ghoul for each creature put into the graveyard during that turn.
: Remove a corpse counter from Scavenging Ghoul to regenerate it.
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