Donatello, Way with Machines 
Legendary Creature — Mutant Ninja Turtle
$0.21 #13634 0.00 0.5 years
Flying
Whenever an artifact you control enters, put a +1/+1 counter on Donatello.
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Cards similar to Donatello, Way with Machines expected a card that isn't here?
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Machinesmith Automaton100%
$0.17↓#17896↓0.000.2 years
"Whenever another artifact you control enters, put a +1/+1 counter on this creature."
Oreplate Pangolin98%
$0.14↓#16597↓0.12↑1.1 years
"Whenever another artifact you control enters, you may pay 
. If you do, put a +1/+1 counter on this creature."
. If you do, put a +1/+1 counter on this creature."
Tidus, Blitzball Star96%
$0.18↓#127820.38↑1.2 years
"Whenever an artifact you control enters, put a +1/+1 counter on this card."
Karstoderm96%
$0.05↓#31823↓0.35↑22.6 years↑
"Whenever an artifact enters, remove a +1/+1 counter from this creature."
Ingenious Smith96%
$0.16↓#132390.005.1 years↑
"Whenever one or more artifacts you control enter, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Yotian Dissident94%
$0.25↑#9912↑0.29↑3.8 years↑
"Whenever an artifact you control enters, put a +1/+1 counter on target creature you control."
Mm'menon, Uthros Exile93%
$0.25↑#9317↑0.061.1 years
"Whenever an artifact you control enters, put a +1/+1 counter on target creature."
Glaze Fiend92%
$0.17↓#24361↓0.0017.9 years↑
"Whenever another artifact you control enters, this creature gets +2/+2 until end of turn."
+1 more matching line
Towashi Songshaper91%
$0.10↓#25896↓0.004.5 years↑
"Whenever another artifact you control enters, this creature gets +1/+0 until end of turn."
Perimeter Patrol91%
$0.04↓#30426↓0.003.8 years↑
"Whenever an artifact you control enters, this creature gets +1/+0 until end of turn."
Phalanx Vanguard91%
$0.04↓#27045↓0.27↑3.8 years↑
"Whenever an artifact you control enters, this creature gets +1/+0 until end of turn."
Mandible Justiciar90%
$0.18↓#16734↓0.24↑3.6 years↑
"Whenever another artifact you control enters, this creature gets +1/+1 until end of turn."
Replication Specialist87%
$0.19↓#133530.56↑4.5 years↑
"Flying"
Scavenger Drake86%
$0.18↓#22233↓0.40↑17.9 years↑
"Flying"
Arcbound Condor86%
$0.20↓#9660↑0.38↑2.2 years↑
"Flying"
Elvish Archivist86%
$0.30↑#8625↑0.38↑3.0 years↑
"Whenever one or more artifacts you control enter, put two +1/+1 counters on this creature. This ability triggers only once each turn."
Vermiculos85%
$0.32↑#29210↓0.25↑22.9 years↑
"Whenever an artifact enters, this creature gets +4/+4 until end of turn."
Aven Sunstriker84%
$0.24↑#17715↓0.0011.4 years↑
"Flying"
Arcbound Crusher84%
$4.08↑#6012↑0.22↑22.6 years↑
"Whenever another artifact enters, put a +1/+1 counter on this creature."
Surge Conductor83%
$0.36↑#2751↑0.37↑1.1 years
"Whenever another nontoken artifact you control enters, proliferate."