Aetherflux Conduit 
Artifact
$0.31 #5637 0.34 1.6 years
Whenever you cast a spell, you get an amount of
(energy counters) equal to the amount of mana spent to cast that spell.
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Cards similar to Aetherflux Conduit 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.
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"

,
, Pay X
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"
, Pay six
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"When this creature enters, you get 
. Then if you cast it from your hand, exile cards from the top of your library until you exile a nonland card. You may cast that card by paying an amount of
equal to its mana value rather than paying its mana cost."