Quagmire Lamprey 
Creature — Fish
$0.16 #30855 0.10 27.0 years
Whenever this creature becomes blocked by a creature, put a -1/-1 counter on that creature.
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Plague Wight92%
$0.08↓#285110.137.7 years↓
"Whenever this creature becomes blocked, each creature blocking it gets -1/-1 until end of turn."
Slinking Giant90%
$0.10↓#312200.1018.5 years↓
"Whenever this creature blocks or becomes blocked, it gets -3/-0 until end of turn."
Knight of Valor86%
$0.18↑#284000.00↓29.7 years↑
"
: Each creature without flanking blocking this creature gets -1/-1 until end of turn. Activate only once each turn."
: Each creature without flanking blocking this creature gets -1/-1 until end of turn. Activate only once each turn."
Order of the Mirror // Order of the Alabaster Host86%
$0.08↓#279300.00↓3.5 years↓
"Whenever this creature becomes blocked by a creature, the blocking creature gets -1/-1 until end of turn."
Rabid Rats82%
$0.16#24306↑0.00↓28.6 years↑
"
: Target blocking creature gets -1/-1 until end of turn."
: Target blocking creature gets -1/-1 until end of turn."
Viashino Weaponsmith82%
$0.17↑#316140.00↓28.0 years
"Whenever this creature becomes blocked by a creature, this creature gets +2/+2 until end of turn."
Skinrender82%
$0.23↑#5692↑0.69↑16.1 years↓
"When this creature enters, put three -1/-1 counters on target creature."
Cultbrand Cinder82%
$0.11↓#306590.00↓18.5 years↓
"When this creature enters, put a -1/-1 counter on target creature."
Baneblade Scoundrel // Baneclaw Marauder80%
$0.08↓#269010.135.1 years↓
"Whenever this creature becomes blocked, each creature blocking it gets -1/-1 until end of turn."
Hezrou // Demonic Stench80%
$0.12↓#20841↑0.35↑4.4 years↓
"Whenever one or more creatures you control become blocked, each blocking creature gets -1/-1 until end of turn."
Blight Rot80%
$0.28↑#8917↑0.040.7 years↓
"Put four -1/-1 counters on target creature."
Gnarled Effigy80%
$0.15↓#277690.0718.5 years↓
"
, : Put a -1/-1 counter on target creature."
, : Put a -1/-1 counter on target creature."
Goblin Elite Infantry80%
$0.09↓#303910.00↓30.0 years↑
"Whenever this creature blocks or becomes blocked, it gets -1/-1 until end of turn."
Raging Gorilla80%
$0.17↑#20470↑0.00↓29.7 years↑
"Whenever this creature blocks or becomes blocked, it gets +2/-2 until end of turn."
Harbinger of Night80%
$24.09↑#14367↑1.29↑30.0 years↑
"At the beginning of your upkeep, put a -1/-1 counter on each creature."
Deeproot Warrior80%
$0.10↓#284270.00↓9.1 years↓
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn."
Trained Cheetah80%
$10.00↑#320820.00↓27.5 years
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn."
Norwood Warrior80%
$0.62↑#302440.00↓28.3 years↑
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn."
Jungle Wurm79%
$0.09↓#316360.00↓30.0 years↑
"Whenever this creature becomes blocked, it gets -1/-1 until end of turn for each creature blocking it beyond the first."
Johtull Wurm79%
$0.22↑#316160.50↑31.4 years↑
"Whenever this creature becomes blocked, it gets -2/-1 until end of turn for each creature blocking it beyond the first."