Angry Rabble 

Creature — Human Citizen
$0.11 #18536 0.14 1.1 years
Trample
Whenever you cast a spell with mana value 4 or greater, this creature deals 1 damage to each opponent.
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Cards similar to Angry Rabble 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.
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"Whenever you cast a creature spell, put two +1/+1 counters on this creature. If that spell has mana value 5 or greater, this creature deals damage equal to the number of counters on it to each opponent."
+1 more matching line
Intrepid Tenderfoot86%
$0.09↓#22557↓0.061.2 years
"
: Put a +1/+1 counter on this creature. Activate only as a sorcery."
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$0.09↓#192490.080.2 years
"

: Put three +1/+1 counters on this creature."
+1 more matching line
Anthroplasm84%
$0.54↑#26132↓0.00↓27.7 years↑
"
,
: Remove all +1/+1 counters from this creature and put X +1/+1 counters on it."
Stormkeld Prowler83%
$0.10↓#26218↓0.053.1 years↑
"Whenever you cast a spell with mana value 5 or greater, put two +1/+1 counters on this creature."
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"Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent."
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"Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent."
Ascendant Packleader82%
$0.32↑#8160↑0.154.9 years↑
"Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature."
Lurking Lizards82%
$0.13↑#187970.00↓1.1 years
"Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature."