Wanderwine Hub
Land
As this land enters, you may reveal a Merfolk card from your hand. If you don't, this land enters tapped.
{T}: Add {W} or {U}.
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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.
Gleaming Bastion 98%
$2.61#13161
"{T}: Add {W} or {U}. Activate only if this land entered this turn or if you control a basic land."