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.
Slinking Skirge 100%
$0.10#31026
"{2}, Sacrifice this creature: Draw a card."
Yavimaya Elder 100%
$0.25#3412
"{2}, Sacrifice this creature: Draw a card."
Combat Courier 100%
$0.06#12860
"{2}, Sacrifice this creature: Draw a card."
Marker Beetles 100%
$0.13#28020
"{2}, Sacrifice this creature: Draw a card."
Tangletrove Kelp 100%
$0.34#5462
"{2}, Sacrifice this creature: Draw a card."
Brass Secretary 100%
$0.20#27876
"{2}, Sacrifice this creature: Draw a card."
Red Herring 100%
$0.12#21106
"{2}, Sacrifice this creature: Draw a card."
Illvoi Galeblade 100%
$0.21#11902
"{2}, Sacrifice this creature: Draw a card."
Sarcomite Myr 100%
$0.22#16950
"{2}, Sacrifice this creature: Draw a card."
Plague Dogs 100%
$0.22#29373
"{2}, Sacrifice this creature: Draw a card."
Parcel Myr 100%
$0.14#14044
"{2}, Sacrifice this creature: Draw a card."
Scorn-Blade Berserker 96%
$0.26#9061
"{1}, Sacrifice this creature: Draw a card."
Grave-Shell Scarab 96%
$0.46#18671
"{1}, Sacrifice this creature: Draw a card."
Living Lectern 93%
$0.07#23501
"{1}, Sacrifice this creature: Draw a card. Create a Sorcerer Role token attached to up to one other target creature you control. Activate only as a sorcery."