Rough Rhino Cavalry 

Creature — Human Mercenary
$0.10 #14146 0.14 0.9 years
Firebending 2 (Whenever this creature attacks, add 
. This mana lasts until end of combat.)
Exhaust —
: Put two +1/+1 counters on this creature. It gains trample until end of turn. (Activate each exhaust ability only once.)
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Cards similar to Rough Rhino Cavalry 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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