Chimil, the Inner Sun {6}
Legendary Artifact
Spells you control can't be countered.
At the beginning of your end step, discover 5. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)
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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.
Malevolent Hermit // Benevolent Geist 89%
$1.55#4201
"Noncreature spells you control can't be countered."
Goldbug, Humanity's Ally // Goldbug, Scrappy Scout 86%
$1.42#11582
"Human spells you control can't be countered."