Quagmire Lamprey 
Creature — Fish
$0.17 #30476 0.31 26.9 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↓#280690.00↓7.6 years↓
"Whenever this creature becomes blocked, each creature blocking it gets -1/-1 until end of turn."
Slinking Giant90%
$0.10↓#308290.2218.3 years↓
"Whenever this creature blocks or becomes blocked, it gets -3/-0 until end of turn."
Knight of Valor86%
$0.20↑#280720.4129.6 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%
$0.07↓#277650.06↓3.4 years↓
"Whenever this creature becomes blocked by a creature, the blocking creature gets -1/-1 until end of turn."
Rabid Rats82%
$0.18↑#23847↑0.00↓28.5 years↑
"
: Target blocking creature gets -1/-1 until end of turn."
: Target blocking creature gets -1/-1 until end of turn."
Viashino Weaponsmith82%
$0.15↓#313140.00↓27.9 years
"Whenever this creature becomes blocked by a creature, this creature gets +2/+2 until end of turn."
Skinrender82%
$0.17#5738↑0.4015.9 years↓
"When this creature enters, put three -1/-1 counters on target creature."
Cultbrand Cinder82%
$0.11↓#302990.00↓18.3 years↓
"When this creature enters, put a -1/-1 counter on target creature."
Hezrou // Demonic Stench81%
$0.07↓#20332↑0.00↓4.2 years↓
"Whenever one or more creatures you control become blocked, each blocking creature gets -1/-1 until end of turn."
Scar81%
$0.23↑#19614↑0.2918.3 years↓
"Put a -1/-1 counter on target creature."
Baneblade Scoundrel // Baneclaw Marauder80%
$0.09↓#265750.06↓4.9 years↓
"Whenever this creature becomes blocked, each creature blocking it gets -1/-1 until end of turn."
Gnarled Effigy80%
$0.18↑#274880.2418.3 years↓
"
, : Put a -1/-1 counter on target creature."
, : Put a -1/-1 counter on target creature."
Blight Rot80%
$0.25↑#9217↑0.00↓0.6 years↓
"Put four -1/-1 counters on target creature."
Goblin Elite Infantry80%
$0.06↓#301980.53↑29.9 years↑
"Whenever this creature blocks or becomes blocked, it gets -1/-1 until end of turn."
Raging Gorilla80%
$0.16↓#20060↑0.00↓29.6 years↑
"Whenever this creature blocks or becomes blocked, it gets +2/-2 until end of turn."
Harbinger of Night80%
$28.20↑#14222↑0.50↑29.9 years↑
"At the beginning of your upkeep, put a -1/-1 counter on each creature."
Deeproot Warrior80%
$0.09↓#280490.00↓8.9 years↓
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn."
Norwood Warrior80%
$0.58↑#299890.3128.2 years↑
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn."
Trained Cheetah80%
$10.95↑#317730.57↑27.3 years
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn."
Jungle Wurm79%
$0.10↓#312610.4029.9 years↑
"Whenever this creature becomes blocked, it gets -1/-1 until end of turn for each creature blocking it beyond the first."