Courier's Briefcase {1}{G}
Artifact — Treasure
When this artifact enters, create a 1/1 green and white Citizen creature token.
{T}, Sacrifice this artifact: Add one mana of any color.
{W}{U}{B}{R}{G}, {T}, Sacrifice this artifact: Draw three cards.
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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.
Chromatic Sphere 90%
$0.37#5167
"{1}, {T}, Sacrifice this artifact: Add one mana of any color. Draw a card."
Barbed Sextant 90%
#18472
"{1}, {T}, Sacrifice this artifact: Add one mana of any color. Draw a card at the beginning of the next turn's upkeep."
Glittering Stockpile 87%
$0.40#2228
"{T}, Sacrifice this artifact: Add X mana of any one color, where X is the number of stash counters on this artifact."
Lotus Blossom 85%
$0.40#11571
"{T}, Sacrifice this artifact: Add X mana of any one color, where X is the number of petal counters on this artifact."
Implements of Sacrifice 81%
$0.61#27683
"{1}, {T}, Sacrifice this artifact: Add two mana of any one color."