Mausoleum Harpy 
Creature — Harpy
$0.04 #29123 0.19 8.6 years
Flying
Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
Whenever another creature you control dies, if you have the city's blessing, put a +1/+1 counter on this creature.
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Guardian Kirin95%
$0.11↑#243420.50↑5.2 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Rot Shambler94%
$0.17↑#13578↑0.00↓10.9 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Unruly Mob94%
$0.08↑#17858↑0.00↓14.9 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Gavony Unhallowed94%
$0.08↑#19717↑0.87↑10.1 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Vengeful Townsfolk94%
$0.12↑#20367↑0.33↑2.4 years↓
"Whenever one or more other creatures you control die, put a +1/+1 counter on this creature."
Scavenger Drake94%
$0.18↑#22233↑0.40↑17.9 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
+1 more matching line
Swarm of Bloodflies93%
$0.09↑#13737↑0.50↑11.9 years↑
"Whenever another creature dies, put a +1/+1 counter on this creature."
Sengir Connoisseur93%
$0.21↑#20360↑0.00↓4.0 years↓
"Whenever one or more other creatures die, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Algae Gharial92%
$0.13↑#21915↑0.05↓17.9 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Rockslide Elemental92%
$0.15↑#239660.47↑17.9 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Aven Sunstriker92%
$0.24↑#17715↑0.00↓11.4 years↑
"Flying"
Lumberknot92%
$0.11↑#15284↑0.2514.9 years↑
"Whenever a creature dies, put a +1/+1 counter on this creature."
Voracious Vermin90%
$0.37↑#6029↑0.193.0 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Thanos, Death's Consort90%
$2.20↑#18354↑0.00↓0.2 years↓
"Whenever another creature dies, put a +1/+1 counter on this card."
Ravenhill Flock89%
$0.21↑#19632↑0.00↓0.1 years↓
"Flying"
Judge Magister Gabranth88%
$0.17↑#9191↑0.271.2 years↓
"Whenever another creature or artifact you control dies, put a +1/+1 counter on this card."
Pterafractyl88%
$0.16↑#16697↑0.00↓0.4 years↓
"Flying"
Blessed Spirits87%
$0.13↑#20632↑0.00↓11.1 years↑
"Flying"
Rising Populace86%
$0.04#22203↑0.227.3 years↓
"Whenever another creature or planeswalker you control dies, put a +1/+1 counter on this creature."
Donatello, Way with Machines86%
$0.21↑#13634↑0.00↓0.5 years↓
"Flying"