Mold Adder 
Creature — Fungus Snake
$0.11 #14542 0.00 17.1 years
Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on this creature.
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Witchstalker100%
$0.25↑#19122↓0.27↑13.1 years↓
"Whenever an opponent casts a blue or black spell during your turn, put a +1/+1 counter on this creature."
Snake Pit90%
$0.32↑#139560.0626.9 years↑
"Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token."
Taurean Mauler89%
$0.56↑#947↑0.31↑18.6 years↑
"Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature."
Managorger Hydra87%
$0.99↑#997↑0.48↑11.1 years↓
"Whenever a player casts a spell, put a +1/+1 counter on this creature."
Ishai, Ojutai Dragonspeaker86%
$3.29↑#4668↑0.59↑9.8 years↓
"Whenever an opponent casts a spell, put a +1/+1 counter on this card."
Sunscorch Regent85%
$0.30↑#1686↑0.29↑11.4 years↓
"Whenever an opponent casts a spell, put a +1/+1 counter on this creature and you gain 1 life."
Eyes of the Wisent84%
$0.59↑#22472↓0.25↑18.9 years↑
"Whenever an opponent casts a blue spell during your turn, you may create a 4/4 green Elemental creature token."
Titania's Chosen80%
$0.31↑#171410.0627.9 years↑
"Whenever a player casts a green spell, put a +1/+1 counter on this creature."
Thundering Mightmare80%
$0.39↑#10837↑0.33↑4.8 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 Hunger80%
$0.65↑#10710↑0.0028.2 years↑
"Whenever an opponent casts a creature spell, put a +1/+1 counter on enchanted creature."
Freyalise's Charm78%
$0.19↑#29607↓0.0031.3 years↑
"Whenever an opponent casts a black spell, you may pay . If you do, you draw a card."
. If you do, you draw a card."
Medusa, Inhuman Queen78%
$0.27↑#18977↓0.000.2 years↓
"Whenever a player casts a noncreature spell, put a +1/+1 counter on this card."
Forgotten Ancient78%
$0.38↑#390↑0.37↑23.3 years↑
"Whenever a player casts a spell, you may put a +1/+1 counter on this creature."
Purraj of Urborg76%
$0.88↑#28511↓0.25↑29.9 years↑
"Whenever a player casts a black spell, you may pay 
. If you do, put a +1/+1 counter on Purraj."
. If you do, put a +1/+1 counter on Purraj."
Kraken's Eye76%
$0.10↓#156090.25↑22.6 years↑
"Whenever a player casts a blue spell, you may gain 1 life."
Crystal Rod76%
$0.12↑#26717↓0.0033.1 years↑
"Whenever a player casts a blue spell, you may pay 
. If you do, you gain 1 life."
. If you do, you gain 1 life."
Demon's Horn76%
$0.23↑#6483↑0.0022.6 years↑
"Whenever a player casts a black spell, you may gain 1 life."
Sol'kanar the Swamp King75%
$0.16↑#19706↓0.12↑32.3 years↑
"Whenever a player casts a black spell, you gain 1 life."
Citanul Druid75%
$8.63↑#28175↓0.53↑32.5 years↑
"Whenever an opponent casts an artifact spell, put a +1/+1 counter on this creature."
Throne of Bone74%
$0.17↑#24397↓0.75↑33.1 years↑
"Whenever a player casts a black spell, you may pay . If you do, you gain 1 life."
. If you do, you gain 1 life."