Dirtcowl Wurm 
Creature — Wurm
$2.30 #16235 0.67 29.1 years
Whenever an opponent plays a land, put a +1/+1 counter on this creature.
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Foe-liage92%
$0.18↓#25936↓0.16↓0.6 years↓
"Whenever a land enters during your turn, put a +1/+1 counter on this creature."
Nightshade Harvester89%
$0.36↓#4775↑0.28↓5.9 years↓
"Whenever a land an opponent controls enters, that player loses 1 life. Put a +1/+1 counter on this creature."
Burgeoning84%
$30.33↑#909↑1.16↑28.6 years
"Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield."
Shattered Angel83%
$0.51↓#6694↑0.07↓15.4 years↓
"Whenever a land an opponent controls enters, you may gain 3 life."
Pangosaur78%
$0.54↓#23163↓0.00↓27.0 years↓
"Whenever a player plays a land, return this creature to its owner's hand."
Managorger Hydra76%
$0.36↓#1022↑0.48↓11.3 years↓
"Whenever a player casts a spell, put a +1/+1 counter on this creature."
Vinelasher Kudzu76%
$0.35↓#135350.00↓21.0 years↓
"Whenever a land you control enters, put a +1/+1 counter on this creature."
Territorial Scythecat76%
$0.16↓#8109↑0.24↓6.1 years↓
"Whenever a land you control enters, put a +1/+1 counter on this creature."
Prowling Felidar76%
$0.17↓#142890.20↓6.1 years↓
"Whenever a land you control enters, put a +1/+1 counter on this creature."
Sazh's Chocobo76%
$0.51↓#2990↑0.44↓1.4 years↓
"Whenever a land you control enters, put a +1/+1 counter on this creature."
Hidden Stag76%
$0.44↓#29886↓0.00↓28.0 years↓
"Whenever an opponent plays a land, if this permanent is an enchantment, it becomes a 3/2 Elk Beast creature."
Taurean Mauler76%
$0.41↓#956↑0.38↓18.7 years↓
"Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature."
Horn of Greed76%
$7.19↑#2123↑0.39↓28.6 years
"Whenever a player plays a land, that player draws a card."
Noosegraf Mob74%
$0.27↓#11109↑0.13↓10.2 years↓
"Whenever a player casts a spell, remove a +1/+1 counter from this creature. If you do, create a 2/2 black Zombie creature token."
Citanul Druid74%
$8.33↑#28629↓0.21↓32.6 years↑
"Whenever an opponent casts an artifact spell, put a +1/+1 counter on this creature."
Ishai, Ojutai Dragonspeaker72%
$3.68↑#4727↑0.56↓9.9 years↓
"Whenever an opponent casts a spell, put a +1/+1 counter on this card."
Sunscorch Regent72%
$0.31↓#1629↑0.36↓11.6 years↓
"Whenever an opponent casts a spell, put a +1/+1 counter on this creature and you gain 1 life."
Archaeomancer's Map72%
$0.88↓#680↑0.24↓5.5 years↓
"Whenever a land an opponent controls enters, if that player controls more lands than you, you may put a land card from your hand onto the battlefield."
Tectonic Instability72%
$3.76↑#143991.50↑26.0 years↓
"Whenever a land enters, tap all lands its controller controls."
Leela, Sevateem Warrior71%
$0.24↓#182060.57↓3.0 years↓
"Whenever an opponent draws a card except the first one they draw in each of their draw steps, put a +1/+1 counter on this card."