Azuremsyt Isle: Blood Elf Bandit shouldn't have Heroic Strike
NPC 17591.
Found no proof that he should be using Heroic Strike, especially considering Heroic Strike does as much as damage as Backstab does which in quick succession together with melee attacks can kill everyone except Warriors and Paladins.
Also, skills it does use are stealth, sinister strike and backstab which fit the mob. Heroic Strike is a warrior skill and doesn't fit the rest of the rogue skills.