Case of the Crimson Pulse 

Enchantment — Case
$0.29 #13393 0.19 2.7 years
When this Case enters, discard a card, then draw two cards.
To solve — You have no cards in hand. (If unsolved, solve at the beginning of your end step.)
Solved — At the beginning of your upkeep, discard your hand, then draw two cards.
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Cards similar to Case of the Crimson Pulse 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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"When this enchantment enters, you may discard a card. If you do, draw two cards."
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"When this artifact enters, you may discard a card. If you do, draw two cards."
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"You may discard a card. If you do, draw two cards."
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"Discard your hand, then draw two cards."
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"At the beginning of your end step, if you control two or more tapped creatures, you may discard your hand. If you do, draw two cards."
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$0.20↓#140570.1810.2 years↑
"When this creature enters, discard your hand, then draw three cards."
Kickoff Celebrations78%
$0.21↓#10363↑0.00↓1.7 years↓
"When this enchantment enters, you may discard a card. If you do, draw two cards."
Rix Maadi Reveler78%
$0.22↓#22368↓0.00↓7.7 years↑
"When this creature enters, discard a card, then draw a card. If this creature's spectacle cost was paid, instead discard your hand, then draw three cards."
Phyrexian Dragon Engine78%
$1.10↑#8507↑0.00↓3.9 years↑
"When this creature enters from your graveyard, you may discard your hand. If you do, draw three cards."
Invasion of Mercadia // Kyren Flamewright76%
$0.21↓#123640.05↓3.5 years
"When this Siege enters, you may discard a card. If you do, draw two cards."
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$0.39↑#4859↑0.271.4 years↓
"When this card enters, discard any number of cards, then draw that many cards plus one."
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"When this creature enters, discard your hand, then draw three cards."
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"When this creature is turned face up, discard your hand, then draw three cards."