Grindclock {2}
Artifact
{T}: Put a charge counter on this artifact.
{T}: Target player mills X cards, where X is the number of charge counters on this artifact.
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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.
Empowered Autogenerator 95%
$0.30#4112
"{T}: Put a charge counter on this artifact. Add X mana of any one color, where X is the number of charge counters on this artifact."
Jeweled Amulet 88%
#3622
"{1}, {T}: Put a charge counter on this artifact. Note the type of mana spent to pay this activation cost. Activate only if there are no charge counters on this artifact."
Conversion Chamber 85%
$0.10#23220
"{2}, {T}, Remove a charge counter from this artifact: Create a 3/3 colorless Phyrexian Golem artifact creature token."
Font of Progress 84%
$0.07#21600
"{3}, {T}: Target player mills X cards, where X is the number of oil counters on this artifact."
Keening Stone 84%
$0.42#9175
"{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard."