Immortal Coil 


Artifact
{T}, Exile two cards from your graveyard: Draw a card.
If damage would be dealt to you, prevent that damage. Exile a card from your graveyard for each 1 damage prevented this way.
When there are no cards in your graveyard, you lose the game.
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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.
Purity 85%
$2.50#16284
"If noncombat damage would be dealt to you, prevent that damage. You gain life equal to the damage prevented this way."
Phyrexian Vindicator 84%
$5.50#3231
"If damage would be dealt to this creature, prevent that damage. When damage is prevented this way, this creature deals that much damage to any other target."
Rem Karolus, Stalwart Slayer 82%
$0.38#7752
"If a spell would deal damage to you or another permanent you control, prevent that damage."