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.
Bleachbone Verge 100%
$9.52#870
"{T}: Add {W}. Activate only if you control a Plains or a Swamp."
Nimbus Maze 100%
$7.27#1849
"{T}: Add {W}. Activate only if you control an Island."
Lupinflower Village 100%
$0.26#4577
"{T}: Add {W}. Spend this mana only to cast a creature spell."
Giada, Font of Hope 100%
$0.58#1703
"{T}: Add {W}. Spend this mana only to cast an Angel spell."
Nomad Stadium 100%
$0.48#14051
"{T}: Add {W}. This land deals 1 damage to you."
Hourglass of the Lost 100%
$1.31#5888
"{T}: Add {W}. Put a time counter on this artifact."
Fabrication Foundry 100%
$0.30#9980
"{T}: Add {W}. Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
Abandoned Outpost 99%
$0.22#22145
"{T}: Add {W}."
Ishgard, the Holy See // Faith & Grief 99%
$1.99#1566
"{T}: Add {W}."
Ojer Taq, Deepest Foundation // Temple of Civilization 99%