Caldera Pyremaw 


Creature — Dragon
Flying
Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature. Then this creature deals damage equal to its power to target opponent.
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Cards that do something similar expected a card that isn't here?
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Electrostatic Infantry 99%
$0.30#6215
"Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature."
Pyre Hound 99%
$0.17#18547
"Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature."
Molten-Core Maestro 99%
$0.37#9288
"Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature. If five or more mana was spent to cast that spell, add an amount of {R} equal to this creature's power."
Quandrix Pledgemage 91%
$0.17#21223
"Whenever you cast or copy an instant or sorcery spell, put a +1/+1 counter on this creature."
Dragonsguard Elite 91%
$0.27#15967
"Whenever you cast or copy an instant or sorcery spell, put a +1/+1 counter on this creature."
Murktide Regent 89%
$6.53#14883
"Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on this creature."
Prismari Apprentice 86%
$0.16#21939
"Whenever you cast or copy an instant or sorcery spell, this creature can't be blocked this turn. If that spell has mana value 5 or greater, put a +1/+1 counter on this creature."
Lecturing Scornmage 86%
$0.17#19036
"Whenever you cast an instant or sorcery spell that targets a creature, put a +1/+1 counter on this creature."
Scolding Administrator 86%
$0.20#18637
"Whenever you cast an instant or sorcery spell that targets a creature, put a +1/+1 counter on this creature."
Tackle Artist 85%
$0.13#20104
"Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature. If five or more mana was spent to cast that spell, put two +1/+1 counters on this creature instead."
Colorstorm Stallion 85%
$0.43#14924
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn. If five or more mana was spent to cast that spell, create a token that's a copy of this creature."
Expressive Firedancer 84%
$0.08#22911
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn. If five or more mana was spent to cast that spell, this creature also gains double strike until end of turn."
Aberrant Manawurm 83%
$0.09#24017
"Whenever you cast an instant or sorcery spell, this creature gets +X/+0 until end of turn, where X is the amount of mana spent to cast that spell."
Renegade Bull 83%
$0.23#15025
"Whenever you cast an instant or sorcery spell, this creature gets +X/+0 until end of turn, where X is that spell's mana value."
Erratic Cyclops 83%
$0.20#17911
"Whenever you cast an instant or sorcery spell, this creature gets +X/+0 until end of turn, where X is that spell's mana value."
Elemental Mascot 83%
$0.10#21024
"Whenever you cast an instant or sorcery spell, this creature gets +1/+0 until end of turn. If five or more mana was spent to cast that spell, exile the top card of your library. You may play that card until the end of your next turn."
Frolicking Familiar // Blow Off Steam 82%
$0.24#7735
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn."
Aven Wind Mage 82%
$0.16#22687
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn."
Spellrune Painter // Spellrune Howler 82%
$0.17#20131
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn."