Rayami, First of the Fallen 



Legendary Creature — Vampire
If a nontoken creature would die, exile that card with a blood counter on it instead.
As long as an exiled creature card with a blood counter on it has flying, Rayami has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance.
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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.
Animus of Predation 89%
$0.08#31519
"If you removed a creature card with flying from the draft with cards named this card, this creature has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, and vigilance."
Soulflayer 89%
$0.34#20150
"If a creature card with flying was exiled with this creature's delve ability, this creature has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance."
Altar of the Wretched // Wretched Bonemass 88%
$1.39#7467
"This creature has flying as long as an exiled card used to craft it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance."
Death-Mask Duplicant 88%
$0.26#28357
"As long as a card exiled with this creature has flying, this creature has flying. The same is true for fear, first strike, double strike, haste, landwalk, protection, and trample."
Urborg Scavengers 88%
$0.30#12363
"This creature has flying as long as a card exiled with it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance."
Escaped Shapeshifter 87%
$1.09#29308
"As long as an opponent controls a creature with flying not named this card, this creature has flying. The same is true for first strike, trample, and protection from any color."
Cairn Wanderer 87%
$0.35#11337
"As long as a creature card with flying is in a graveyard, this creature has flying. The same is true for fear, first strike, double strike, deathtouch, haste, landwalk, lifelink, protection, reach, trample, shroud, and vigilance."
Eater of Virtue 86%
$0.38#9056
"As long as a card exiled with this card has flying, equipped creature has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance."
Anafenza, the Foremost 86%
$0.57#14111
"If a nontoken creature an opponent owns would die or a creature card not on the battlefield would be put into an opponent's graveyard, exile that card instead."
Kumano Faces Kakkazan // Etching of Kumano 85%
$0.27#14295
"If a creature dealt damage this turn by a source you controlled would die, exile it instead."
Nemata, Primeval Warden 84%
$1.13#4628
"If a creature an opponent controls would die, exile it instead. When you do, create a 1/1 green Saproling creature token."
Kumano, Master Yamabushi 83%
$0.29#22101
"If a creature dealt damage by this card this turn would die, exile it instead."
Liesa, Forgotten Archangel 82%
$1.98#2058
"If a creature an opponent controls would die, exile it instead."
Vren, the Relentless 82%
$0.40#5131
"If a creature an opponent controls would die, exile it instead."
Gisa, Glorious Resurrector 82%
$3.03#2686
"If a creature an opponent controls would die, exile it instead."
Kalitas, Traitor of Ghet 82%
$5.11#7093
"If a nontoken creature an opponent controls would die, instead exile that card and create a 2/2 black Zombie creature token."
Donal, Herald of Wings 82%
$0.41#9650
"Whenever you cast a nonlegendary creature spell with flying, you may copy it, except the copy is a 1/1 Spirit in addition to its other types. Do this only once each turn."