Omarthis, Ghostfire Initiate 
Legendary Creature — Spirit Snake
$1.31 #8796 0.27 3.2 years
Omarthis enters with X +1/+1 counters on it.
Whenever you put one or more +1/+1 counters on another colorless creature, you may put a +1/+1 counter on Omarthis.
When Omarthis dies, manifest a number of cards from the top of your library equal to the number of counters on it.
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Cards similar to Omarthis, Ghostfire Initiate expected a card that isn't here?
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"This creature enters with X +1/+1 counters on it."
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"this card enters with three +1/+1 counters on it."
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$0.13↓#11439↓0.00↓11.6 years↑
"Whenever one or more +1/+1 counters are put on another creature you control, you may put a +1/+1 counter on this creature."
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$0.26↓#6899↑0.06↓3.5 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."
+1 more matching line
Slurrk, All-Ingesting88%
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"this card enters with five +1/+1 counters on it."
+1 more matching line
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$0.25↓#1516↑0.3011.3 years↑
"This creature enters with X +1/+1 counters on it."
+1 more matching line
Maga, Traitor to Mortals86%
$3.10↑#20494↓0.50↑21.4 years↑
"this card enters with X +1/+1 counters on it."
Swarm Shambler84%
$0.19↓#15392↓0.07↓6.1 years↑
"This creature enters with a +1/+1 counter on it."
Wildwood Scourge84%
$0.18↓#3748↑0.14↓6.3 years↑
"This creature enters with X +1/+1 counters on it."
Fairgrounds Trumpeter84%
$0.09↓#19957↓0.00↓10.1 years↑
"At the beginning of each end step, if a +1/+1 counter was put on a permanent under your control this turn, put a +1/+1 counter on this creature."
Big Bertha83%
$0.31↓#23350↓0.38↑0.3 years↓
"this card enters with X +1/+1 counters on her."
Vastwood Hydra83%
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"This creature enters with X +1/+1 counters on it."
+1 more matching line
Savageborn Hydra83%
$0.45↓#11740↓0.12↓13.5 years↑
"This creature enters with X +1/+1 counters on it."
Iron Apprentice83%
$0.26↓#6095↑0.11↓4.7 years↑
"This creature enters with a +1/+1 counter on it."
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"This creature enters with three +1/+1 counters on it."
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$0.06↓#16927↓0.07↓11.6 years↑
"This creature enters with a +1/+1 counter on it."
+1 more matching line
Swarm of Bloodflies82%
$0.08↓#13969↓0.3612.1 years↑
"This creature enters with two +1/+1 counters on it."
Big Mother Mouser82%
$1.28↓#4796↑0.310.6 years↓
"This creature enters with two +1/+1 counters on it."
+1 more matching line
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"this card enters with two +1/+1 counters on it."