Helitrooper 
Creature — Human Soldier
$0.21 #7766 0.12 1.4 years
Flying
Whenever this creature attacks, another target attacking creature gains flying until end of turn.
Equip abilities you activate that target this creature cost 
less to activate.
less to activate.Click a line or tag to filter
Cards similar to Helitrooper 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.
Pegasus Courser95%
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"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Aerial Guide95%
$0.06↓#23552↓0.00↓9.3 years↑
"Whenever this creature attacks, another target attacking creature gains flying until end of turn."
Dwarven Mauler94%
$0.18↓#11712↓0.120.2 years↓
"Equip abilities you activate that target this creature cost less to activate."
less to activate."
Kinsbaile Balloonist93%
$0.14↓#26585↓0.00↓19.0 years↑
"Whenever this creature attacks, you may have target creature gain flying until end of turn."
Heavenly Qilin93%
$0.13↓#30037↓0.068.3 years↑
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Trained Condor93%
$0.05↓#28912↓0.00↓13.3 years↑
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Chasm Drake93%
$0.08↓#30609↓0.29↑15.3 years↑
"Whenever this creature attacks, target creature you control gains flying until end of turn."
Gwaihir, Greatest of the Eagles91%
$0.43↑#5954↑0.073.3 years↑
"Whenever this card attacks, target attacking creature gains flying until end of turn."
+1 more matching line
Phyrexian Pegasus90%
$0.17↓#17555↓0.00↓3.5 years↑
"Whenever this creature attacks, another target attacking creature without flying gains flying until end of turn."
Starry-Eyed Skyrider89%
$0.15↓#82500.111.5 years
"Whenever this creature attacks, another target creature you control gains flying until end of turn."
Roc Charger89%
$0.15↓#26875↓0.00↓8.0 years↑
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
Trusted Pegasus89%
$0.13↓#17601↓0.00↓7.5 years↑
"Whenever this creature attacks, target attacking creature without flying gains flying until end of turn."
Fervent Champion88%
$0.30↑#83590.217.0 years↑
"Equip abilities you activate that target this creature cost 
less to activate."
less to activate."
Cloud, Planet's Champion88%
$1.76↑#70081.00↑1.4 years
"Equip abilities you activate that target this card cost less to activate."
less to activate."
Gravity Negator88%
$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."
Appa, Aang's Companion86%
$0.27↑#16654↓0.120.9 years
"Whenever this card attacks, another target attacking creature without flying gains flying until end of turn."
+1 more matching line
Bladegraft Aspirant86%
$0.27↑#79170.053.7 years↑
"Activated abilities of Equipment you control that target this creature cost less to activate."
less to activate."
Eddytrail Hawk85%
$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."
Gryffwing Cavalry85%
$0.09↓#25143↓0.00↓4.9 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."
Landroval, Horizon Witness84%
$0.19↓#13812↓0.27↑3.3 years↑
"Whenever two or more creatures you control attack a player, target attacking creature without flying gains flying until end of turn."