Heroes in a Half Shell 
Legendary Creature — Mutant Ninja Turtle
$0.49 #8290 0.52 0.7 years
Vigilance, menace, trample, haste
Whenever one or more Mutants, Ninjas, and/or Turtles you control deal combat damage to a player, put a +1/+1 counter on each of those creatures and draw a card.
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Cards similar to Heroes in a Half Shell 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.
Marcus, Mutant Mayor79%
$0.44↓#67090.24↓2.7 years↑
"Vigilance, trample"
+1 more matching line
Vulture, Feathered Fiend77%
$0.36↓#18647↓0.430.4 years
"Whenever one or more creatures you control with flying deal combat damage to a player, put a +1/+1 counter on each of those creatures and draw a card."
Haliya, Ascendant Cadet74%
$0.21↓#91770.12↓1.3 years
"Whenever one or more creatures you control with +1/+1 counters on them deal combat damage to a player, draw a card."
The Odd Acorn Gang72%
$0.55↑#4753↑0.09↓2.3 years↑
"Reach, menace, trample"
+1 more matching line
Bred for the Hunt71%
$0.27↓#2682↑0.20↓13.5 years↑
"Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, you may draw a card."
Phlox, Unorthodox Doctor71%
$0.22↓#28644↓0.0 years
"Whenever a creature you control with a counter on it deals combat damage to a player, draw a card."
Ray Fillet, Wave Warrior70%
$0.34↓#69430.29↓0.7 years
"Whenever a creature you control with a counter on it deals combat damage to a player, draw a card."