Brash Taunter 
Creature — Goblin
$2.22 #812 0.58 6.3 years
Indestructible
Whenever this creature is dealt damage, it deals that much damage to target opponent.
, 
: This creature fights another target creature.Click a line or tag to filter
Cards similar to Brash Taunter 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.
Mogg Maniac93%
$0.32↓#11828↓0.33↓28.6 years↑
"Whenever this creature is dealt damage, it deals that much damage to target opponent or planeswalker."
Tephraderm92%
$0.25↓#28361↓0.12↓24.0 years↑
"Whenever a spell deals damage to this creature, this creature deals that much damage to that spell's controller."
Wall of Souls92%
$1.65↓#16280↓0.13↓28.6 years↑
"Whenever this creature is dealt combat damage, it deals that much damage to target opponent or planeswalker."
Spitemare90%
$0.31↓#12334↓0.15↓18.2 years↑
"Whenever this creature is dealt damage, it deals that much damage to any target."
Donna Noble88%
$0.37↓#11025↓0.06↓3.0 years↓
"Whenever this card or a creature it's paired with is dealt damage, this card deals that much damage to target opponent."
Truefire Captain87%
$0.23↓#12831↓0.15↓8.0 years↑
"Whenever this creature is dealt damage, it deals that much damage to target player."
Boros Reckoner87%
$0.24↓#6358↓0.38↓13.7 years↑
"Whenever this creature is dealt damage, it deals that much damage to any target."
Stuffy Doll86%
$6.00↑#2257↓0.6220.0 years↑
"Whenever this creature is dealt damage, it deals that much damage to the chosen player."
+1 more matching line
Ulvenwald Tracker86%
$5.72↑#2973↓0.24↓14.5 years↑
"
, : Target creature you control fights another target creature."
, : Target creature you control fights another target creature."
Blazing Sunsteel82%
$9.52↑#6372↓0.12↓5.9 years
"Whenever equipped creature is dealt damage, it deals that much damage to any target."
Black Panther, Most Dangerous82%
$0.38↓#17511↓0.44↓0.3 years↓
"Whenever this card is dealt damage, he deals that much damage to any other target."
Wayta, Trainer Prodigy82%
$0.32↓#8328↓0.572.9 years↓
", : Target creature you control fights another target creature. This ability costs less to activate if it targets two creatures you control."
, : Target creature you control fights another target creature. This ability costs less to activate if it targets two creatures you control."+1 more matching line
Polukranos, Unchained80%
$0.74↓#12145↓0.12↓6.7 years
"
: this card fights another target creature."
: this card fights another target creature."
Ill-Tempered Loner // Howlpack Avenger80%
$0.45↓#7218↓0.12↓4.9 years↓
"Whenever this creature is dealt damage, it deals that much damage to any target."
Screaming Nemesis79%
$6.57↑#3722↓1.21↑2.1 years↓
"Whenever this creature is dealt damage, it deals that much damage to any other target. If a player is dealt damage this way, they can't gain life for the rest of the game."
Pain for All78%
$1.05↓#2767↓0.43↓1.2 years↓
"Whenever enchanted creature is dealt damage, it deals that much damage to each opponent."
Wrathful Red Dragon78%
$9.32↑#2255↓0.484.4 years↓
"Whenever a Dragon you control is dealt damage, it deals that much damage to any target that isn't a Dragon."
Daybreak Ranger // Nightfall Predator78%
$0.44↓#15085↓0.06↓15.1 years↑
", : This creature fights target creature."
, : This creature fights target creature."
Fiendlash78%
$0.38↓#4958↓0.10↓5.2 years↓
"Whenever equipped creature is dealt damage, it deals damage equal to its power to target player or planeswalker."
Darksteel Sentinel78%
$0.30↓#16088↓0.06↓16.1 years↑
"Indestructible"