Dalkovan Encampment
Land
This land enters tapped unless you control a Swamp or a Mountain.
{T}: Add {W}.
{2}{W}, {T}: Whenever you attack this turn, create two 1/1 red Warrior creature tokens that are tapped and attacking. Sacrifice them at the beginning of the next end step.
click a line to search just that ability, click more to combine them
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.
Dragonskull Summit 100%
$0.33#86
"This land enters tapped unless you control a Swamp or a Mountain."
Castle Locthwain 88%
$4.15#759
"This land enters tapped unless you control a Swamp."
+1 more matching line
Spymaster's Vault 88%
$0.93#1137
"This land enters tapped unless you control a Swamp."
+1 more matching line
Foreboding Ruins 82%
#328
"As this land enters, you may reveal a Swamp or Mountain card from your hand. If you don't, this land enters tapped."
Dwarven Mine 81%
$0.34#3056
"This land enters tapped unless you control three or more other Mountains."