Putrid Cyclops 

Creature — Zombie Cyclops
$0.02 #31946 0.21 19.5 years
When this creature enters, scry 1, then reveal the top card of your library. This creature gets -X/-X until end of turn, where X is that card's mana value. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)
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Cards similar to Putrid Cyclops 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.
Sifter Wurm90%
$0.11↑#14159↑0.00↓9.3 years↓
"When this creature enters, scry 3, then reveal the top card of your library. You gain life equal to that card's mana value."
Interpret the Signs84%
$0.12↑#14104↑0.43↑12.5 years↓
"Scry 3, then reveal the top card of your library. Draw cards equal to that card's mana value."
Stormchaser Chimera82%
$0.06↑#297750.05↓12.5 years↓
"

: Scry 1, then reveal the top card of your library. This creature gets +X/+0 until end of turn, where X is that card's mana value."
Riddle of Lightning80%
$0.08↑#18701↑0.00↓19.5 years
"Choose any target. Scry 3, then reveal the top card of your library. this card deals damage equal to that card's mana value to that permanent or player."