Howling Mine 
Artifact
At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.
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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.
Nekusar, the Mindrazer 86%
$3.76#3676
"At the beginning of each player's draw step, that player draws an additional card."
Rites of Flourishing 86%
$0.57#1522
"At the beginning of each player's draw step, that player draws an additional card."
Kami of the Crescent Moon 86%
$7.91#1817
"At the beginning of each player's draw step, that player draws an additional card."
Spiteful Visions 86%
$0.75#2290
"At the beginning of each player's draw step, that player draws an additional card."
Dictate of Kruphix 86%
$0.35#1908
"At the beginning of each player's draw step, that player draws an additional card."
Well of Ideas 86%
$2.17#6781
"At the beginning of each other player's draw step, that player draws an additional card."
Academy Loremaster 86%
$0.26#12049
"At the beginning of each player's draw step, that player may draw an additional card. If they do, spells they cast this turn cost {2} more to cast."
Chains of Mephistopheles 83%
#10992
"If a player would draw a card except the first one they draw in each of their draw steps, that player discards a card instead. If the player discards a card this way, they draw a card. If the player doesn't discard a card this way, they mill a card."