Glade Gnarr 
Creature — Beast
$0.05 #31511 0.53 25.3 years
Whenever a player casts a blue spell, this creature gets +2/+2 until end of turn.
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Crystal Rod90%
$0.12↑#267170.00↓33.1 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."
Kraken's Eye88%
$0.10↑#15609↑0.25↓22.6 years↓
"Whenever a player casts a blue spell, you may gain 1 life."
Lapis Lazuli Talisman84%
$1.03↑#263710.29↓31.3 years↑
"Whenever a player casts a blue spell, you may pay 
. If you do, untap target permanent."
. If you do, untap target permanent."
Drowner Initiate82%
$0.28↑#22330↑0.38↓18.3 years↓
"Whenever a player casts a blue spell, you may pay . If you do, target player mills two cards."
. If you do, target player mills two cards."
Gearsmith Guardian82%
$0.05#291720.07↓8.1 years↓
"This creature gets +2/+0 as long as you control a blue creature."
Briarberry Cohort80%
$0.17↑#260340.00↓18.3 years↓
"This creature gets +1/+1 as long as you control another blue creature."
Mudbrawler Raiders76%
$0.07↑#311280.06↓18.3 years↓
"This creature can't be blocked by blue creatures."
Eyes of the Wisent76%
$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."
Karoo Meerkat76%
$0.17↑#301080.29↓29.9 years↑
"Protection from blue"
Yavimaya Barbarian76%
$0.08↑#294980.07↓25.9 years
"Protection from blue"
Nacatl Outlander76%
$0.10↑#279450.19↓17.6 years↓
"Protection from blue"
Guma76%
$0.26↑#299060.6327.9 years↑
"Protection from blue"
Blue Scarab75%
$0.27↑#25000↑0.00↓31.3 years↑
"Enchanted creature gets +2/+2 as long as an opponent controls a blue permanent."
Minotaur Tactician74%
$0.06↑#318710.00↓25.3 years
"This creature gets +1/+1 as long as you control a blue creature."
Witchstalker74%
$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."
Ricochet Trap74%
$0.28↑#7526↑0.27↓16.6 years↓
"If an opponent cast a blue spell this turn, you may pay 
rather than pay this spell's mana cost."
rather than pay this spell's mana cost."
Gravelgill Duo72%
$0.09↑#296960.38↓18.3 years↓
"Whenever you cast a blue spell, this creature gets +1/+1 until end of turn."
Mold Adder72%
$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."
Snake Pit71%
$0.32↑#13956↑0.06↓26.9 years↑
"Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token."
Amphibious Kavu70%
$0.08↑#295220.29↓25.6 years
"Whenever this creature blocks or becomes blocked by one or more blue and/or black creatures, this creature gets +3/+3 until end of turn."