Ebon Praetor {4}{B}{B}
Creature — Avatar Praetor
First strike, trample
At the beginning of your upkeep, put a -2/-2 counter on this creature.
Sacrifice a creature: Remove a -2/-2 counter from this creature. If the sacrificed creature was a Thrull, put a +1/+0 counter on this creature. Activate only during your upkeep and only once each turn.
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Cards that do something similar expected a card that isn't here?
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Magmaroth 97%
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"At the beginning of your upkeep, put a -1/-1 counter on this creature."
+1 more matching line
Lichenthrope 97%
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"At the beginning of your upkeep, remove a -1/-1 counter from this creature."
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"At the beginning of your upkeep, put a -1/-1 counter on each creature."
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"At the beginning of your upkeep, put a -1/-1 counter on enchanted creature."
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"At the beginning of your upkeep, put a -1/-1 counter on enchanted creature."
Crumbling Ashes 81%
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"At the beginning of your upkeep, destroy target creature with a -1/-1 counter on it."