Citanul Druid 
Creature — Human Druid
$8.33 #28629 0.21 32.6 years
Whenever an opponent casts an artifact spell, put a +1/+1 counter on this creature.
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Taurean Mauler90%
$0.41↓#956↑0.38↑18.7 years↓
"Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature."
Infested Roothold88%
$0.26↓#232700.2222.7 years↓
"Whenever an opponent casts an artifact spell, you may create a 1/1 green Insect creature token."
Golem's Heart85%
$0.24↓#13488↑0.06↓16.1 years↓
"Whenever a player casts an artifact spell, you may gain 1 life."
Sunscorch Regent84%
$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."
Ishai, Ojutai Dragonspeaker84%
$3.68↓#4727↑0.56↑9.9 years↓
"Whenever an opponent casts a spell, put a +1/+1 counter on this card."
Managorger Hydra80%
$0.36↓#1022↑0.48↑11.3 years↓
"Whenever a player casts a spell, put a +1/+1 counter on this creature."
Dragonlair Spider80%
$0.49↓#8367↑0.31↑14.4 years↓
"Whenever an opponent casts a spell, create a 1/1 green Insect creature token."
Thundering Mightmare80%
$0.42↓#11160↑0.284.9 years↓
"As long as this card is paired with another creature, each of those creatures has "Whenever an opponent casts a spell, put a +1/+1 counter on this creature.""
Predatory Hunger79%
$0.61↓#10864↑0.1128.3 years↓
"Whenever an opponent casts a creature spell, put a +1/+1 counter on enchanted creature."
Medusa, Inhuman Queen78%
$0.27↓#17923↑0.43↑0.3 years↓
"Whenever a player casts a noncreature spell, put a +1/+1 counter on this card."
Noosegraf Mob77%
$0.27↓#11109↑0.1310.2 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."
Mogg Sentry77%
$0.32↓#22626↑0.1225.7 years↓
"Whenever an opponent casts a spell, this creature gets +2/+2 until end of turn."
Solarium Sentry77%
$0.31↓#19077↑0.150.0 years↓
"Whenever an opponent casts a spell with mana value 2 or less, you gain 2 life."
Urza's Chalice76%
$1.11↓#241590.06↓32.6 years
"Whenever a player casts an artifact spell, you may pay . If you do, you gain 1 life."
. If you do, you gain 1 life."
Steelburr Champion75%
$0.37↓#7006↑0.262.2 years↓
"Whenever an opponent casts a noncreature spell, put a +1/+1 counter on this creature."
Mold Adder75%
$0.12↓#14685↑0.2017.3 years↓
"Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on this creature."
Witchstalker74%
$0.29↓#19155↑0.00↓13.3 years↓
"Whenever an opponent casts a blue or black spell during your turn, put a +1/+1 counter on this creature."
Chimeric Egg74%
$0.23↓#236580.05↓22.7 years↓
"Whenever an opponent casts a nonartifact spell, put a charge counter on this artifact."
Forgotten Ancient74%
$0.34↓#390↑0.44↑23.4 years↓
"Whenever a player casts a spell, you may put a +1/+1 counter on this creature."
Dirtcowl Wurm74%
$2.30↓#16235↑0.67↑29.1 years↓
"Whenever an opponent plays a land, put a +1/+1 counter on this creature."