Stonebinder's Familiar 
Creature — Spirit Dog
$0.20 #20972 0.00 5.5 years
Whenever one or more cards are put into exile during your turn, put a +1/+1 counter on this creature. This ability triggers only once each turn.
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Cards similar to Stonebinder's Familiar expected a card that isn't here?
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Rakshasa Vizier94%
$0.22↑#27823↓0.29↑12.1 years↑
"Whenever one or more cards are put into exile from your graveyard, put that many +1/+1 counters on this creature."
Ennis, Debate Moderator92%
$0.23↑#14040↑0.020.5 years↓
"At the beginning of your end step, if one or more cards were put into exile this turn, put a +1/+1 counter on this card."
Laelia, the Blade Reforged89%
$0.34↑#1343↑0.27↑5.5 years
"Whenever one or more cards are put into exile from your library and/or your graveyard, put a +1/+1 counter on this card."
Soulherder88%
$1.81↑#1710↑0.40↑7.4 years↑
"Whenever a creature is exiled from the battlefield, put a +1/+1 counter on this creature."
Hero of Bretagard86%
$0.30↑#14255↑0.11↑5.7 years
"Whenever one or more cards are put into exile from your hand or a spell or ability you control exiles one or more permanents from the battlefield, put that many +1/+1 counters on this creature."
Syr Vondam, Sunstar Exemplar76%
$0.40↑#4513↑0.16↑1.2 years↓
"Whenever another creature you control dies or is put into exile, put a +1/+1 counter on this card and you gain 1 life."
Rushwood Elemental75%
$1.04↑#28334↓0.0027.0 years↑
"At the beginning of your upkeep, you may put a +1/+1 counter on this creature."
War Elemental74%
$5.18↑#13554↑0.0023.0 years↑
"Whenever an opponent is dealt damage, put that many +1/+1 counters on this creature."
Child of the Volcano74%
$0.12↓#233220.062.9 years↓
"At the beginning of your end step, if you descended this turn, put a +1/+1 counter on this creature."
Shard of the Void Dragon72%
$1.91↑#9955↑0.50↑4.0 years↓
"Whenever an artifact is put into a graveyard from the battlefield or is put into exile from the battlefield, put two +1/+1 counters on this creature."
Deep Goblin Skulltaker72%
$0.15↓#190930.002.9 years↓
"At the beginning of your end step, if you descended this turn, put a +1/+1 counter on this creature."
Air Nomad Student71%
$0.17↓#247350.090.9 years↓
"At the beginning of your end step, if this creature didn't attack this turn, put a +1/+1 counter on it."
Knight of Wundagore70%
$0.08↓#197830.11↑0.3 years↓
"Whenever you put a +1/+1 counter on another creature, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Ashiok, Wicked Manipulator70%
$0.25↑#14472↑0.40↑3.1 years↓
"−2: Create two 1/1 black Nightmare creature tokens with "At the beginning of combat on your turn, if a card was put into exile this turn, put a +1/+1 counter on this token.""
Botanical Brawler70%
$0.26↑#6899↑0.063.5 years↓
"Whenever one or more +1/+1 counters are put on another permanent you control, if it's the first time +1/+1 counters have been put on that permanent this turn, put a +1/+1 counter on this creature."
Oneirophage70%
$0.14↓#6954↑0.18↑7.4 years↑
"Whenever you draw a card, put a +1/+1 counter on this creature."
Clinquant Skymage70%
$0.25↑#5756↑0.061.9 years↓
"Whenever you draw a card, put a +1/+1 counter on this creature."
Lorescale Coatl70%
$0.15↓#11755↑0.0617.5 years↑
"Whenever you draw a card, put a +1/+1 counter on this creature."
Ravenhill Flock70%
$0.22↑#16212↑0.20↑0.2 years↓
"Whenever you draw a card, put a +1/+1 counter on this creature."
Savageborn Hydra70%
$0.45↑#11740↑0.12↑13.5 years↑
"This creature enters with X +1/+1 counters on it."