Persistent Constrictor 
Creature — Zombie Snake
$12.50 #2708 0.34 1.9 years
At the beginning of each opponent's upkeep, they lose 1 life and you put a -1/-1 counter on up to one target creature they control.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
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Rendclaw Trow84%
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"Persist"
Crumbling Ashes80%
$27.70↑#6709↓0.79↑18.1 years↑
"At the beginning of your upkeep, destroy target creature with a -1/-1 counter on it."
Gnarled Effigy80%
$0.18↓#27488↓0.24↓18.3 years↑
", 
: Put a -1/-1 counter on target creature."
, : Put a -1/-1 counter on target creature."
Splendid Agony80%
$0.14↓#15059↓0.00↓9.4 years↑
"Distribute two -1/-1 counters among one or two target creatures."
Obelisk Spider79%
$3.17↓#4844↓0.06↓9.1 years↑
"Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life."
Skinrender78%
$0.17↓#5738↓0.4015.9 years↑
"When this creature enters, put three -1/-1 counters on target creature."
Blight Rot78%
$0.25↓#9217↓0.00↓0.6 years↓
"Put four -1/-1 counters on target creature."
Scar78%
$0.23↓#19614↓0.2918.3 years↑
"Put a -1/-1 counter on target creature."
Cultbrand Cinder78%
$0.11↓#30299↓0.00↓18.3 years↑
"When this creature enters, put a -1/-1 counter on target creature."
Harbinger of Night77%
$28.20↑#14222↓0.50↑29.9 years↑
"At the beginning of your upkeep, put a -1/-1 counter on each creature."
Volrath, the Shapestealer74%
$0.68↓#13602↓0.50↑7.0 years↑
"At the beginning of combat on your turn, put a -1/-1 counter on up to one target creature."
Instill Infection74%
$0.11↓#23712↓0.07↓15.9 years↑
"Put a -1/-1 counter on target creature."
Weed-Pruner Poplar74%
$0.15↓#26274↓0.2918.6 years↑
"At the beginning of your upkeep, target creature other than this creature gets -1/-1 until end of turn."
Grim Affliction74%
$0.31↓#4601↓0.3315.3 years↑
"Put a -1/-1 counter on target creature, then proliferate."
Furystoke Giant74%
$5.29↓#16824↓0.50↑18.3 years↑
"Persist"
Fevered Convulsions74%
$0.66↓#22324↓0.4228.9 years↑
"
: Put a -1/-1 counter on target creature."
: Put a -1/-1 counter on target creature."
Serrated Biskelion73%
$0.13↓#20026↓0.00↓29.2 years↑
": Put a -1/-1 counter on this creature and a -1/-1 counter on target creature."
: Put a -1/-1 counter on this creature and a -1/-1 counter on target creature."
Darkness Descends72%
$0.27↓#10402↓0.00↓0.6 years↓
"Put two -1/-1 counters on each creature."
Tooth Collector72%
$0.05↓#25459↓0.47↑10.5 years↑
"At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, target creature that player controls gets -1/-1 until end of turn."
Soul Snuffers72%
$0.27↓#5038↓0.21↓18.1 years↑
"When this creature enters, put a -1/-1 counter on each creature."