Lair of the Hydra
Land
If you control two or more other lands, this land enters tapped.
{T}: Add {G}.
{X}{G}: Until end of turn, this land becomes an X/X green Hydra creature. It's still a land. X can't be 0.
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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.
Den of the Bugbear 100%
$2.14#3064
"If you control two or more other lands, this land enters tapped."
Hive of the Eye Tyrant 100%
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"If you control two or more other lands, this land enters tapped."
Hall of Storm Giants 100%
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"If you control two or more other lands, this land enters tapped."
+1 more matching line
Cave of the Frost Dragon 100%
$0.38#7736
"If you control two or more other lands, this land enters tapped."
Dreamroot Cascade 93%
$1.21#180
"This land enters tapped unless you control two or more other lands."
Shattered Sanctum 93%
$1.76#280
"This land enters tapped unless you control two or more other lands."
Overgrown Farmland 93%
$2.98#289
"This land enters tapped unless you control two or more other lands."
Stormcarved Coast 93%
$2.13#189
"This land enters tapped unless you control two or more other lands."
Scorched Geyser 91%
$0.39#4140
"This land enters tapped unless you control two or more basic lands."
Eclipsed Steppe 91%
$2.53#4967
"This land enters tapped unless you control two or more basic lands."