Confounding Conundrum 

Enchantment
$0.30 #8205 0.29 6.1 years
When this enchantment enters, draw a card.
Whenever a land an opponent controls enters, if that player had another land enter the battlefield under their control this turn, they return a land they control to its owner's hand.
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Cards similar to Confounding Conundrum 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.
Tunnel Ignus84%
$0.53↑#18522↓0.41↑16.1 years↑
"Whenever a land enters under an opponent's control, if that player had another land enter the battlefield under their control this turn, this creature deals 3 damage to that player."
Ankh of Mishra82%
$8.82↑#5030↑1.01↑33.2 years↑
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Zo-Zu the Punisher78%
$4.62↑#4159↑1.11↑22.1 years↑
"Whenever a land enters, Zo-Zu deals 2 damage to that land's controller."