Kilo, Apogee Mind 
Legendary Artifact Creature — Robot Artificer
$0.51 #3074 0.48 1.2 years
Haste
Whenever Kilo becomes tapped, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
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Cards similar to Kilo, Apogee Mind expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Veteran of the Depths80%
$0.20↓#25344↓0.05↓19.0 years↑
"Whenever this creature becomes tapped, you may put a +1/+1 counter on it."
Tale of Katara and Toph76%
$2.03↑#5850↓0.20↓0.9 years
"Creatures you control have "Whenever this creature becomes tapped for the first time during each of your turns, put a +1/+1 counter on it.""
Atraxa, Praetors' Voice76%
$26.03↑#2362↑1.77↑9.9 years↑
"At the beginning of your end step, proliferate."
Vampire Envoy75%
$0.12↓#19223↓0.00↓10.7 years↑
"Whenever this creature becomes tapped, you gain 1 life."
Wanderbrine Preacher75%
$0.17↓#17799↓0.12↓0.7 years
"Whenever this creature becomes tapped, you gain 2 life."
Radha, Coalition Warlord75%
$0.08↓#19074↓0.06↓4.1 years↑
"Whenever this card becomes tapped, another target creature you control gets +X/+X until end of turn, where X is the number of basic land types among lands you control."
Gideon's Avenger72%
$0.69↑#14609↓0.3815.3 years↑
"Whenever a creature an opponent controls becomes tapped, put a +1/+1 counter on this creature."
Stonybrook Schoolmaster72%
$0.32↓#11671↓0.06↓18.7 years↑
"Whenever this creature becomes tapped, you may create a 1/1 blue Merfolk Wizard creature token."
Fallowsage72%
$0.33↓#10097↓0.12↓19.0 years↑
"Whenever this creature becomes tapped, you may draw a card."
Zar Ojanen, Scion of Efrava71%
$0.17↓#18620↓0.00↓4.1 years↑
"Whenever this card becomes tapped, put a +1/+1 counter on each creature you control with toughness less than the number of basic land types among lands you control."
Inexorable Tide71%
$0.91↑#996↑0.5816.1 years↑
"Whenever you cast a spell, proliferate."
Emmara, Soul of the Accord70%
$0.32↓#6681↓0.12↓8.0 years↑
"Whenever this card becomes tapped, create a 1/1 white Soldier creature token with lifelink."
Hemosymbic Mite70%
$0.22↓#19790↓0.04↓1.2 years
"Whenever this creature becomes tapped, another target creature you control gets +X/+X until end of turn, where X is this creature's power."
Thrummingbird70%
$0.25↓#829↑0.30↓16.1 years↑
"Whenever this creature deals combat damage to a player, proliferate."