Medic's Kitesail 
Artifact — Equipment
$0.15 #22841 0.01 0.0 years
Equipped creature gets +1/+0 and has flying and "Whenever this creature attacks, you gain 1 life."
Equip
(
: Attach to target creature you control. Equip only as a sorcery.)
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Cards similar to Medic's Kitesail expected a card that isn't here?
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Infinity Formula82%
$0.21↑#244100.14↑0.3 years
"Equipped creature gets +1/+2 and has "Whenever this creature attacks, you gain 2 life.""
+1 more matching line
Victory's Herald76%
$0.24↑#11662↑0.18↑15.7 years↑
"Whenever this creature attacks, attacking creatures gain flying and lifelink until end of turn."
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$0.16↑#7907↑0.31↑1.4 years↑
"Equipped creature gets +1/+1, has "Whenever this creature attacks, you gain 1 life," and is a Cleric in addition to its other types."