Majestic Heliopterus 
Creature — Dinosaur
$0.22 #9796 0.12 8.8 years
Flying
Whenever this creature attacks, another target Dinosaur you control gains flying until end of turn.
Click a line or tag to filter
Cards similar to Majestic Heliopterus 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.
Triceraton Commander91%
$0.85↑#14326↓0.45↑0.6 years↓
"Whenever this creature attacks, Dinosaurs you control other than this creature get +1/+1 and gain flying until end of turn."
Tilonalli's Knight86%
$0.09↓#29396↓0.24↑9.1 years
"Whenever this creature attacks, if you control a Dinosaur, this creature gets +1/+1 until end of turn."
Heavenly Qilin86%
$0.13↓#30037↓0.068.3 years
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Trained Condor86%
$0.05↓#28912↓0.00↓13.3 years↑
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Chasm Drake86%
$0.08↓#30609↓0.29↑15.3 years↑
"Whenever this creature attacks, target creature you control gains flying until end of turn."
Pegasus Courser84%
$0.11↓#17678↓0.30↑8.5 years
"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Aerial Guide84%
$0.06↓#23552↓0.00↓9.3 years
"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Kinsbaile Balloonist84%
$0.14↓#26585↓0.00↓19.0 years↑
"Whenever this creature attacks, you may have target creature gain flying until end of turn."
Gwaihir, Greatest of the Eagles82%
$0.43↑#5954↑0.073.3 years↓
"Whenever this card attacks, target attacking creature gains flying until end of turn."
+1 more matching line
Garrison Griffin82%
$0.23↑#26692↓0.00↓7.0 years↓
"Whenever this creature attacks, target Knight you control gains flying until end of turn."
Gravity Negator82%
$0.05↓#26180↓0.00↓10.7 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."
Starry-Eyed Skyrider81%
$0.15↓#82500.111.5 years↓
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Phyrexian Pegasus80%
$0.17↓#17555↓0.00↓3.5 years↓
"Whenever this creature attacks, another target attacking creature without flying gains flying until end of turn."
Roc Charger80%
$0.15↓#26875↓0.00↓8.0 years
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
Trusted Pegasus80%
$0.13↓#17601↓0.00↓7.5 years↓
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
Moon-Boy, Dino Rider79%
$0.28↑#23402↓0.170.3 years↓
"Whenever this card attacks while you control a Dinosaur, this card gets +1/+1 until end of turn."
Eddytrail Hawk78%
$0.06↓#20449↓0.00↓10.1 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."
Pugnacious Hammerskull78%
$0.19↓#5244↑0.00↓2.9 years↓
"Whenever this creature attacks while you don't control another Dinosaur, put a stun counter on it."
Cavalry Pegasus78%
$0.14↓#14362↓0.1213.1 years↑
"Whenever this creature attacks, each attacking Human gains flying until end of turn."
+1 more matching line
Moonshae Pixie // Pixie Dust78%
$0.11↓#13630↓0.064.4 years↓
"Flying"