Lattice-Blade Mantis 

Creature — Phyrexian Insect
This creature enters with two oil counters on it.
Whenever this creature attacks, you may remove an oil counter from it. If you do, untap it and it gets +1/+1 until end of turn.
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Cards that do something similar 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.
Brightfield Mustang 90%
$0.13#15885
"Whenever this creature attacks while saddled, untap it and put a +1/+1 counter on it."
Shakedown Heavy 87%
$0.35#6566
"Whenever this creature attacks, defending player may have you draw a card. If they do, untap this creature and remove it from combat."
Copperhorn Scout 86%
$0.27#5520
"Whenever this creature attacks, untap each other creature you control."
Apes of Rath 86%
$0.28#25240
"Whenever this creature attacks, it doesn't untap during its controller's next untap step."
Lead Golem 86%
$0.13#31565
"Whenever this creature attacks, it doesn't untap during its controller's next untap step."
Scourge of the Throne 85%
$0.39#1277
"Whenever this creature attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures. After this phase, there is an additional combat phase."
Jangling Automaton 85%
$0.11#21680
"Whenever this creature attacks, untap all creatures defending player controls."
Spectral Bears 85%
#19485
"Whenever this creature attacks, if defending player controls no black nontoken permanents, it doesn't untap during your next untap step."
Spectral Force 85%
$0.25#27516
"Whenever this creature attacks, if defending player controls no black permanents, it doesn't untap during your next untap step."
Melee 84%
$0.33#28941
"Whenever a creature attacks and isn't blocked this combat, untap it and remove it from combat."