Nimbus Maze
Land
{T}: Add {C}.
{T}: Add {W}. Activate only if you control an Island.
{T}: Add {U}. Activate only if you control a Plains.
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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.
Floodfarm Verge 100%
$7.76#685
"{T}: Add {U}. Activate only if you control a Plains or an Island."
+1 more matching line
Riverpyre Verge 100%
$19.24#944
"{T}: Add {U}. Activate only if you control an Island or a Mountain."
Ojer Pakpatiq, Deepest Epoch // Temple of Cyclical Time 100%
$3.72#3047
"{T}: Add {U}. Remove a time counter from this land."
Lilypad Village 100%
$0.32#3660
"{T}: Add {U}. Spend this mana only to cast a creature spell."
+1 more matching line
Guidelight Optimizer 99%
$0.24#11123
"{T}: Add {U}. Spend this mana only to cast an artifact spell or activate an ability."
Hydraulic Helper 99%
$0.11#21816
"{T}: Add {U}. This mana can't be spent to cast a nonartifact spell."
Hydro-Channeler 99%
$0.17#14708
"{T}: Add {U}. Spend this mana only to cast an instant or sorcery spell."
Fabrication Foundry 99%
$0.30#9980
"{T}: Add {W}. Spend this mana only to cast an artifact spell or activate an ability of an artifact source."