Ammit Eternal 

Creature — Zombie Crocodile Demon
$1.32 #11205 0.33 9.3 years
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)
Whenever an opponent casts a spell, put a -1/-1 counter on this creature.
Whenever this creature deals combat damage to a player, remove all -1/-1 counters from it.
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Cards similar to Ammit Eternal expected a card that isn't here?
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Lichenthrope89%
$0.59↓#29221↓0.00↓29.7 years↑
"At the beginning of your upkeep, remove a -1/-1 counter from this creature."
+1 more matching line
Magmaroth87%
$0.07↓#29663↓0.00↓9.3 years
"At the beginning of your upkeep, put a -1/-1 counter on this creature."
+1 more matching line
Witherscale Wurm85%
$0.78↓#20517↓0.00↓18.5 years↑
"Whenever this creature deals damage to an opponent, remove all -1/-1 counters from it."
+1 more matching line
Reluctant Dounguard84%
$0.07↓#22582↓0.03↓0.7 years↓
"This creature enters with two -1/-1 counters on it."
+1 more matching line
Moonshadow83%
$17.38↑#8141↑0.17↓0.7 years↓
"This creature enters with six -1/-1 counters on it."
+1 more matching line
Encumbered Reejerey83%
$0.16↓#22556↓0.04↓0.7 years↓
"This creature enters with three -1/-1 counters on it."
+1 more matching line
Belligerent Hatchling82%
$0.16↓#28780↓0.00↓18.2 years↑
"This creature enters with four -1/-1 counters on it."
+1 more matching line
Heirloom Auntie81%
$0.17↓#15285↓0.04↓0.7 years↓
"This creature enters with two -1/-1 counters on it."
+1 more matching line
Creakwood Safewright81%
$0.16↓#15859↓0.04↓0.7 years↓
"This creature enters with three -1/-1 counters on it."
+1 more matching line
Voracious Hatchling81%
$0.17↓#29729↓0.00↓18.2 years↑
"This creature enters with four -1/-1 counters on it."
+1 more matching line