Kilo, Apogee Mind 
Legendary Artifact Creature — Robot Artificer
$0.44 #3239 0.39 1.1 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 Depths78%
$0.18↓#24938↓0.29↓18.9 years↑
"Whenever this creature becomes tapped, you may put a +1/+1 counter on it."
Atraxa, Praetors' Voice76%
$24.32↑#2475↑1.72↑9.8 years↑
"At the beginning of your end step, proliferate."
Tale of Katara and Toph75%
$1.50↑#6124↓0.00↓0.8 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.""
Wanderbrine Preacher74%
$0.16↓#17988↓0.00↓0.6 years
"Whenever this creature becomes tapped, you gain 2 life."
Vampire Envoy74%
$0.11↓#18914↓0.3110.6 years↑
"Whenever this creature becomes tapped, you gain 1 life."
Radha, Coalition Warlord74%
$0.08↓#18693↓0.69↑4.0 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."
Thrummingbird72%
$0.25↓#845↑0.22↓15.9 years↑
"Whenever this creature deals combat damage to a player, proliferate."
Gideon's Avenger72%
$0.69↑#14353↓0.29↓15.1 years↑
"Whenever a creature an opponent controls becomes tapped, put a +1/+1 counter on this creature."
Stonybrook Schoolmaster72%
$0.33↓#11482↓0.3018.6 years↑
"Whenever this creature becomes tapped, you may create a 1/1 blue Merfolk Wizard creature token."
Fallowsage71%
$0.29↓#9941↓0.04↓18.9 years↑
"Whenever this creature becomes tapped, you may draw a card."
Inexorable Tide70%
$1.13↑#1036↑0.66↑15.9 years↑
"Whenever you cast a spell, proliferate."
Zar Ojanen, Scion of Efrava70%
$0.13↓#18215↓0.06↓4.0 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."
Emmara, Soul of the Accord70%
$0.32↓#6600↓0.18↓7.9 years↑
"Whenever this card becomes tapped, create a 1/1 white Soldier creature token with lifelink."