Mindless Automaton {4}
Artifact Creature — Construct
This creature enters with two +1/+1 counters on it.
{1}, Discard a card: Put a +1/+1 counter on this creature.
Remove two +1/+1 counters from this creature: Draw a card.
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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.
Junk Golem 100%
$0.28#29664
"{1}, Discard a card: Put a +1/+1 counter on this creature."
+1 more matching line
Spinal Parasite 86%
$0.21#26333
"Remove two +1/+1 counters from this creature: Remove a counter from target permanent."
Sawtooth Thresher 86%
$0.06#27837
"Remove two +1/+1 counters from this creature: It gets +4/+4 until end of turn."