Clay Champion 

Artifact Creature — Construct
This creature enters with three +1/+1 counters on it for each {G}{G} spent to cast it.
When this creature enters, choose up to two other target creatures you control. For each {W}{W} spent to cast this creature, put a +1/+1 counter on each of them.
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Cards that do something similar expected a card that isn't here?
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Epochrasite 84%
$0.37#14826
"This creature enters with three +1/+1 counters on it if you didn't cast it from your hand."
Effortless Master 83%
$0.06#21931
"This creature enters with two +1/+1 counters on it if you've cast two or more spells this turn."
Garenbrig Paladin 82%
$0.10#26407
"If at least three green mana was spent to cast this spell, this creature enters with a +1/+1 counter on it."
Steel Exemplar 81%
$0.15#21264
"This creature enters with two +1/+1 counters on it unless two or more colors of mana were spent to cast it."