Rot Shambler 
Creature — Fungus
$0.18 #13829 0.30 11.0 years
Whenever another creature you control dies, put a +1/+1 counter on this creature.
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Cards similar to Rot Shambler expected a card that isn't here?
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Unruly Mob100%
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"Whenever another creature you control dies, put a +1/+1 counter on this creature."
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"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Vengeful Townsfolk100%
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"Whenever one or more other creatures you control die, put a +1/+1 counter on this creature."
Guardian Kirin99%
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"Whenever another creature you control dies, put a +1/+1 counter on this creature."
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"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Scavenger Drake98%
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"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Swarm of Bloodflies98%
$0.08↓#139690.3612.1 years↑
"Whenever another creature dies, put a +1/+1 counter on this creature."
Sengir Connoisseur97%
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"Whenever one or more other creatures die, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Voracious Vermin96%
$0.34↑#6228↑0.00↓3.1 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Algae Gharial96%
$0.11↓#22219↓0.19↓18.0 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Lumberknot96%
$0.12↓#155490.00↓15.1 years↑
"Whenever a creature dies, put a +1/+1 counter on this creature."
Thanos, Death's Consort96%
$2.43↑#17338↓0.14↓0.3 years↓
"Whenever another creature dies, put a +1/+1 counter on this card."
Mausoleum Harpy94%
$0.04↓#29425↓0.07↓8.8 years↓
"Whenever another creature you control dies, if you have the city's blessing, put a +1/+1 counter on this creature."
Judge Magister Gabranth94%
$0.19↑#9166↑0.251.4 years↓
"Whenever another creature or artifact you control dies, put a +1/+1 counter on this card."
Odric's Outrider92%
$0.23↑#20268↓0.06↓5.1 years↓
"Whenever this creature or another creature you control dies, put a +1/+1 counter on target creature you control."
Rising Populace91%
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"Whenever another creature or planeswalker you control dies, put a +1/+1 counter on this creature."
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"Whenever another creature dies, put a +1/+1 counter on this creature."
Anafenza, Unyielding Lineage90%
$0.23↑#7682↑0.17↓1.5 years↓
"Whenever another nontoken creature you control dies, this card endures 2."
Slurrk, All-Ingesting89%
$0.29↑#9684↑0.11↓5.9 years↓
"Whenever this card or another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on each creature you control that has a +1/+1 counter on it."
Savior of the Sleeping88%
$0.09↓#23378↓0.05↓3.1 years↓
"Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on this creature."