Trigon of Rage {2}
Artifact
This artifact enters with three charge counters on it.
{R}{R}, {T}: Put a charge counter on this artifact.
{2}, {T}, Remove a charge counter from this artifact: Target creature gets +3/+0 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.
Transmogrifying Wand 100%
$0.37#7697
"This artifact enters with three charge counters on it."
+1 more matching line
Trigon of Infestation 100%
$0.21#22876
"This artifact enters with three charge counters on it."
+1 more matching line
Shriekhorn 100%
$0.23#17247
"This artifact enters with three charge counters on it."
+1 more matching line
Trigon of Thought 100%
$0.09#29056
"This artifact enters with three charge counters on it."
+1 more matching line
Tumble Magnet 100%
$0.12#26107
"This artifact enters with three charge counters on it."
+1 more matching line
Surge Node 91%
$0.36#17588
"This artifact enters with six charge counters on it."
+1 more matching line