Gwaihir, Greatest of the Eagles 
Legendary Creature — Bird Noble
$0.38 #5921 0.11 3.2 years
Flying
Whenever Gwaihir attacks, target attacking creature gains flying until end of turn.
At the beginning of each end step, if you gained 3 or more life this turn, create a 3/3 white Bird creature token with flying and "Whenever this token attacks, target attacking creature gains flying until end of turn."
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Cards similar to Gwaihir, Greatest of the Eagles expected a card that isn't here?
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Pegasus Courser98%
$0.09↓#17660↓0.058.4 years↑
"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Aerial Guide98%
$0.05↓#23405↓0.069.1 years↑
"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Kinsbaile Balloonist96%
$0.14↓#26315↓0.53↑18.9 years↑
"Whenever this creature attacks, you may have target creature gain flying until end of turn."
Chasm Drake96%
$0.13↓#30391↓0.00↓15.1 years↑
"Whenever this creature attacks, target creature you control gains flying until end of turn."
Heavenly Qilin96%
$0.14↓#29708↓0.00↓8.2 years↑
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Trained Condor96%
$0.06↓#28667↓0.0913.1 years↑
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Trusted Pegasus95%
$0.15↓#17541↓0.00↓7.3 years↑
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
Roc Charger95%
$0.10↓#26693↓0.00↓7.9 years↑
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
+1 more matching line
Phyrexian Pegasus94%
$0.20↓#17422↓0.25↑3.4 years
"Whenever this creature attacks, another target attacking creature without flying gains flying until end of turn."
Starry-Eyed Skyrider94%
$0.27↓#8330↓0.22↑1.4 years↓
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
+2 more matching lines
Gravity Negator94%
$0.05↓#25981↓0.00↓10.6 years↑
"Whenever this creature attacks, you may pay 
. If you do, another target creature gains flying until end of turn."
. If you do, another target creature gains flying until end of turn."
Helitrooper92%
$0.20↓#7904↓0.36↑1.2 years↓
"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Gryffwing Cavalry91%
$0.14↓#24808↓0.204.8 years↑
"Whenever this creature attacks, you may pay 
. If you do, target attacking creature without flying gains flying until end of turn."
. If you do, target attacking creature without flying gains flying until end of turn."
Eddytrail Hawk90%
$0.06↓#20047↓0.00↓9.9 years↑
"Whenever this creature attacks, you may pay 
. If you do, another target attacking creature gains flying until end of turn."
. If you do, another target attacking creature gains flying until end of turn."
Landroval, Horizon Witness90%
$0.16↓#13617↓0.063.2 years
"Whenever two or more creatures you control attack a player, target attacking creature without flying gains flying until end of turn."
Appa, Aang's Companion90%
$0.27↓#16739↓0.00↓0.8 years↓
"Whenever this card attacks, another target attacking creature without flying gains flying until end of turn."
Blessed Hippogriff // Tyr's Blessing90%
$0.15↓#13185↓0.52↑4.2 years↑
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
+1 more matching line
Oteclan Landmark // Oteclan Levitator89%
$0.13↓#16557↓0.00↓2.8 years
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
Kitesail Skirmisher87%
$0.20↓#21142↓0.33↑5.8 years↑
"Whenever this creature attacks, another target creature attacking the same player or planeswalker gains flying until end of turn."
Victory's Herald86%
$0.31↓#11531↓0.94↑15.6 years↑
"Whenever this creature attacks, attacking creatures gain flying and lifelink until end of turn."