Eye of Vecna 
Legendary Artifact
When Eye of Vecna enters, you draw a card and you lose 2 life.
At the beginning of your upkeep, you may pay {2}. If you do, you draw a card and you lose 2 life.
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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.
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Glint-Sleeve Siphoner 90%
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Stormfist Crusader 86%
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Vampire Lacerator 86%
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"At the beginning of your upkeep, you lose 1 life unless an opponent has 10 or less life."
Champion of Dusk 86%
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"When this creature enters, you draw X cards and you lose X life, where X is the number of Vampires you control."
First-Sphere Gargantua 85%
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"When this creature enters, you draw a card and you lose 1 life."
Merciless Harlequin 85%
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Asylum Visitor 85%
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"At the beginning of each player's upkeep, if that player has no cards in hand, you draw a card and you lose 1 life."
Liliana's Contract 84%
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"When this enchantment enters, you draw four cards and you lose 4 life."
Imskir Iron-Eater 84%
$0.24#6881
"When Imskir enters, you draw X cards and you lose X life, where X is half the number of artifacts you control, rounded down."
Obsessive Pursuit 81%
$0.28#6411
"When this enchantment enters and at the beginning of your upkeep, you lose 1 life and create a Clue token."