Blood-Cursed Knight {1}{W}{B}
Creature — Vampire Knight
As long as you control an enchantment, this creature gets +1/+1 and has lifelink. (Damage dealt by this creature also causes you to gain that much life.)
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Cards that do something similar expected a card that isn't here?
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Staggering Insight 89%
$0.34#5444
"Enchanted creature gets +1/+1 and has lifelink and "Whenever this creature deals combat damage to a player, draw a card.""
Snooping Newsie 85%
$0.07#24904
"As long as there are five or more mana values among cards in your graveyard, this creature gets +1/+1 and has lifelink."
Homicidal Seclusion 85%
$0.06#25467
"As long as you control exactly one creature, that creature gets +3/+1 and has lifelink."
Scourge of the Nobilis 83%
$0.12#17999
"As long as enchanted creature is white, it gets +1/+1 and has lifelink."