Tainted Peak
Land
{T}: Add {C}.
{T}: Add {B} or {R}. Activate only if you control a Swamp.
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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.
Talisman of Indulgence 100%
$0.67#130
"{T}: Add {B} or {R}. This artifact deals 1 damage to you."
+1 more matching line
Dark Fortress 100%
$3.50#12834
"{T}: Add {B} or {R}. Activate only if this land entered this turn or if you control a basic land."
+1 more matching line