Eater of Virtue 
Legendary Artifact — Equipment
$0.35 #9234 0.05 4.5 years
Whenever equipped creature dies, exile it.
Equipped creature gets +2/+0.
As long as a card exiled with Eater of Virtue 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.
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Cards similar to Eater of Virtue expected a card that isn't here?
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Bleeding Effect94%
$0.30↓#93400.38↑2.2 years↓
"At the beginning of combat on your turn, creatures you control gain flying until end of turn if a creature card in your graveyard has flying. The same is true for first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance."
Odric, Lunarch Marshal94%
$0.53↑#1492↑0.35↑10.4 years↑
"At the beginning of each combat, creatures you control gain first strike until end of turn if a creature you control has first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, skulk, trample, and vigilance."
Akroma, Vision of Ixidor92%
$10.75↑#5159↑0.20↑5.8 years↑
"At the beginning of each combat, until end of turn, each other creature you control gets +1/+1 if it has flying, +1/+1 if it has first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, vigilance, and partner."
Urborg Scavengers90%
$0.28↓#12729↓0.20↑3.3 years↓
"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."
Altar of the Wretched // Wretched Bonemass90%
$1.45↑#74980.65↑2.8 years↓
"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."
Majestic Myriarch89%
$0.36↑#14687↓0.25↑9.1 years↑
"At the beginning of each combat, this creature gains flying until end of turn if you control a creature with flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance."
Odric, Blood-Cursed88%
$0.29↓#19388↓0.004.8 years
"When this card enters, create X Blood tokens, where X is the number of abilities from among flying, first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance found among creatures you control."
Soulflayer88%
$0.28↓#20563↓0.1111.6 years↑
"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."
Kathril, Aspect Warper87%
$0.48↑#14728↓0.18↑6.4 years↑
"When this card enters, put a flying counter on any creature you control if a creature card in your graveyard has flying. Repeat this process for first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance. Then put a +1/+1 counter on this card for each counter put on a creature this way."
Animus of Predation86%
$0.11↓#31867↓0.41↑10.0 years↑
"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."
Rayami, First of the Fallen85%
$0.27↓#21582↓0.38↑7.0 years↑
"As long as an exiled creature card with a blood counter on it has flying, this card has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance."
+1 more matching line
Selective Adaptation84%
$0.31↓#17033↓0.47↑6.4 years↑
"Reveal the top seven cards of your library. Choose from among them a card with flying, a card with first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance. Put one of the chosen cards onto the battlefield, the other chosen cards into your hand, and the rest into your graveyard."
Thunderous Orator82%
$0.12↓#19905↓0.005.4 years
"Whenever this creature attacks, it gains flying until end of turn if you control a creature with flying. The same is true for first strike, double strike, deathtouch, indestructible, lifelink, menace, and trample."
Concerted Effort81%
$1.46↑#12733↓0.16↑20.9 years↑
"At the beginning of each upkeep, creatures you control gain flying until end of turn if a creature you control has flying. The same is true for fear, first strike, double strike, landwalk, protection, trample, and vigilance."
Indominus Rex, Alpha80%
$30.74↑#102270.73↑2.8 years↓
"As this card enters, discard any number of creature cards. It enters with a flying counter on it if a card discarded this way has flying. The same is true for first strike, double strike, deathtouch, hexproof, haste, indestructible, lifelink, menace, reach, trample, and vigilance."
Super-Adaptoid78%
$0.30↓#14852↓0.000.2 years↓
"Whenever this card enters or attacks, choose another target creature. If that creature has haste and this card doesn't, put a haste counter on this card. Do the same for flying, first strike, double strike, deathtouch, indestructible, lifelink, menace, reach, trample, and vigilance."
Cairn Wanderer76%
$0.35#11586↓0.32↑18.9 years↑
"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."
Death-Mask Duplicant74%
$0.22↓#28569↓0.0922.6 years↑
"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."
+1 more matching line