Retreat to Coralhelm 

Enchantment
$0.41 #1755 0.36 11.0 years
Landfall — Whenever a land you control enters, choose one —
• You may tap or untap target creature.
• Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
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Cards similar to Retreat to Coralhelm 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.
Elven Raft-Steerer96%
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"Whenever a land you control enters, choose one —"
+1 more matching line
Tideforce Elemental92%
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"
,
: You may tap or untap another target creature."
+1 more matching line
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"You may tap or untap target creature."
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$0.10↓#25724↓0.18↓15.7 years↑
"
,
: Put a -1/-1 counter on target creature. You may tap or untap that creature."
Retreat to Valakut82%
$0.15↓#16152↓0.10↓11.0 years
"Whenever a land you control enters, choose one —"
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"Whenever a land you control enters, choose one —"