Arcbound Tracker {2}{R}
Artifact Creature — Dog
Menace
Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Whenever you cast a spell other than your first spell each turn, put a +1/+1 counter on this creature.
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Cards that do something similar expected a card that isn't here?
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Monk of the Open Hand 92%
$0.28#17221
"Whenever you cast your second spell each turn, put a +1/+1 counter on this creature."
Thunder Drake 92%
$0.19#20416
"Whenever you cast your second spell each turn, put a +1/+1 counter on this creature."
Illvoi Operative 92%
$0.10#19607
"Whenever you cast your second spell each turn, put a +1/+1 counter on this creature."
Razzle-Dazzler 91%
$0.08#14652
"Whenever you cast your second spell each turn, put a +1/+1 counter on this creature. It can't be blocked this turn."
Poised Practitioner 90%
$0.09#18821
"Whenever you cast your second spell each turn, put a +1/+1 counter on this creature. Scry 1."
Arena Trickster 88%
$0.04#27194
"Whenever you cast your first spell during each opponent's turn, put a +1/+1 counter on this creature."
Blazing Bomb 88%
$0.14#15757
"Whenever you cast a noncreature spell, if at least four mana was spent to cast it, put a +1/+1 counter on this creature."
Quirion Beastcaller 88%
$0.35#8553
"Whenever you cast a creature spell, put a +1/+1 counter on this creature."
Pyroceratops 87%
$0.19#17985
"Whenever you cast a noncreature spell, put a +1/+1 counter on this creature."
Sprite Dragon 87%
$0.71#6032
"Whenever you cast a noncreature spell, put a +1/+1 counter on this creature."
Tempest Angler 87%
$0.20#6904
"Whenever you cast a noncreature spell, put a +1/+1 counter on this creature."
Spellgorger Weird 87%
$0.13#15835
"Whenever you cast a noncreature spell, put a +1/+1 counter on this creature."
Boar-q-pine 87%
$0.09#14890
"Whenever you cast a noncreature spell, put a +1/+1 counter on this creature."
Deeproot Champion 87%
$0.27#19647
"Whenever you cast a noncreature spell, put a +1/+1 counter on this creature."
Liberator, Urza's Battlethopter 86%
$7.50#1241
"Whenever you cast a spell, if the amount of mana spent to cast that spell is greater than this card's power, put a +1/+1 counter on this card."
Brineborn Cutthroat 85%
$0.23#10382
"Whenever you cast a spell during an opponent's turn, put a +1/+1 counter on this creature."
Animar, Soul of Elements 84%
$30.94#2341
"Whenever you cast a creature spell, put a +1/+1 counter on this card."
Eshki, Temur's Roar 83%
$2.83#5487
"Whenever you cast a creature spell, put a +1/+1 counter on this card. If that spell's power is 4 or greater, draw a card. If that spell's power is 6 or greater, this card deals damage equal to this card's power to each opponent."
Diamond Knight 83%
$0.20#14812
"Whenever you cast a spell of the chosen color, put a +1/+1 counter on this creature."