Adrenaline Jockey 
Creature — Minotaur Pilot
$0.24 #15615 0.23 1.6 years
Whenever a player casts a spell, if it's not their turn, this creature deals 4 damage to them.
Whenever you activate an exhaust ability, put a +1/+1 counter on this creature.
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Cards similar to Adrenaline Jockey 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 a player casts a spell, if it's not their turn, this creature deals 4 damage to them."
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"Whenever you activate an exhaust ability, return this card from your graveyard to the battlefield."
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"Exhaust — 
: Put a +1/+1 counter on this creature."
: Put a +1/+1 counter on this creature."
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"Whenever you activate an exhaust ability, draw a card."
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"Whenever a player casts a spell with mana value 3 or less, this enchantment deals 2 damage to that player."