Electrostatic Infantry 
Creature — Dwarf Wizard
$0.35 #6376 0.28 4.0 years
Trample
Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature.
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Cards similar to Electrostatic Infantry expected a card that isn't here?
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Pyre Hound100%
$0.07↓#18983↓0.00↓10.4 years↑
"Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature."
Fire Urchin92%
$0.07↓#25447↓0.62↑7.9 years↑
"Whenever you cast an instant or sorcery spell, this creature gets +1/+0 until end of turn."
+1 more matching line
Festival Crasher92%
$0.17↓#19995↓0.224.9 years
"Whenever you cast an instant or sorcery spell, this creature gets +2/+0 until end of turn."
Aven Wind Mage92%
$0.08↓#23016↓0.318.1 years↑
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn."
Wee Dragonauts92%
$0.05↓#18358↓0.2920.7 years↑
"Whenever you cast an instant or sorcery spell, this creature gets +2/+0 until end of turn."
Kiln Fiend92%
$0.10↓#16947↓0.2716.4 years↑
"Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn."
Lecturing Scornmage92%
$0.20↓#18459↓0.00↓0.4 years↓
"Whenever you cast an instant or sorcery spell that targets a creature, put a +1/+1 counter on this creature."
Mercurial Geists92%
$0.04↓#25774↓0.2510.1 years↑
"Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn."
Tackle Artist88%
$0.13↓#19209↓0.00↓0.4 years↓
"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."
Erratic Cyclops88%
$0.15↓#18347↓0.50↑7.9 years↑
"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."
+1 more matching line
Fluxcharger88%
$0.10↓#28164↓0.06↓13.3 years↑
"Whenever you cast an instant or sorcery spell, you may switch this creature's power and toughness until end of turn."
Caldera Pyremaw86%
$0.39↑#4521↑0.321.4 years↓
"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."
Quandrix Pledgemage86%
$0.17↓#21646↓0.07↓5.4 years↑
"Whenever you cast or copy an instant or sorcery spell, put a +1/+1 counter on this creature."
Blistercoil Weird85%
$0.23↓#22603↓0.3113.9 years↑
"Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn. Untap it."
Graduation Day84%
$0.26↓#12902↓0.00↓0.4 years↓
"Whenever you cast an instant or sorcery spell that targets a creature, put a +1/+1 counter on target creature you control."
Aberrant Manawurm84%
$0.11↓#23356↓0.00↓0.4 years↓
"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."
Surrakar Spellblade84%
$0.30↓#17006↓0.2016.4 years↑
"Whenever you cast an instant or sorcery spell, you may put a charge counter on this creature."
Scolding Administrator84%
$0.17↓#18190↓0.00↓0.4 years↓
"Whenever you cast an instant or sorcery spell that targets a creature, put a +1/+1 counter on this creature."
Nivmagus Elemental82%
$0.20↓#26044↓0.00↓13.9 years↑
"Exile an instant or sorcery spell you control: Put two +1/+1 counters on this creature."
Ghitu Amplifier82%
$0.08↓#25463↓0.00↓4.0 years
"Whenever you cast an instant or sorcery spell, this creature gets +2/+0 until end of turn."