Purity 



Creature — Elemental Incarnation
Flying
If noncombat damage would be dealt to you, prevent that damage. You gain life equal to the damage prevented this way.
When Purity is put into a graveyard from anywhere, shuffle it into its owner's library.
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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.
Immortal Coil 85%
$0.56#14393
"If damage would be dealt to you, prevent that damage. Exile a card from your graveyard for each 1 damage prevented this way."
Stormwild Capridor 84%
$0.24#18356
"If noncombat damage would be dealt to this creature, prevent that damage. Put a +1/+1 counter on this creature for each 1 damage prevented this way."
Hostility 81%
$0.24#20025
"If a spell you control would deal damage to an opponent, prevent that damage. Create a 3/1 red Elemental Shaman creature token with haste for each 1 damage prevented this way."
+1 more matching line
Vigor 100%
$14.96#1327
"When this card is put into a graveyard from anywhere, shuffle it into its owner's library."
+1 more matching line
Serra Avatar 100%
$0.59#7614
"When this card is put into a graveyard from anywhere, shuffle it into its owner's library."
Guile 100%
$0.83#11526
"When this card is put into a graveyard from anywhere, shuffle it into its owner's library."
Worldspine Wurm 100%
$2.99#2393
"When this card is put into a graveyard from anywhere, shuffle it into its owner's library."
Dread 100%
$8.13#12836
"When this card is put into a graveyard from anywhere, shuffle it into its owner's library."
Gaea's Blessing 90%
$0.30#5388
"When this card is put into your graveyard from your library, shuffle your graveyard into your library."
Blightsteel Colossus 90%
$39.56#1017
"If this card would be put into a graveyard from anywhere, reveal this card and shuffle it into its owner's library instead."
Legacy Weapon 90%
$0.41#14755
"If this card would be put into a graveyard from anywhere, reveal this card and shuffle it into its owner's library instead."
Nexus of Fate 90%
$5.95#2282
"If this card would be put into a graveyard from anywhere, reveal this card and shuffle it into its owner's library instead."
Progenitus 90%
$1.03#6602
"If this card would be put into a graveyard from anywhere, reveal this card and shuffle it into its owner's library instead."
Darksteel Colossus 90%
$1.08#2525
"If this card would be put into a graveyard from anywhere, reveal this card and shuffle it into its owner's library instead."
Yidaro, Wandering Monster 89%
$0.37#7838
"When you cycle this card, shuffle it into your library from your graveyard. If you've cycled a card named this card four or more times this game, put it onto the battlefield from your graveyard instead."
Ulamog, the Infinite Gyre 87%
$37.01#1359
"When this card is put into a graveyard from anywhere, its owner shuffles their graveyard into their library."
Kozilek, Butcher of Truth 87%
$44.78#1120
"When this card is put into a graveyard from anywhere, its owner shuffles their graveyard into their library."