Arcane Patrollers are hostile level 5-6 elementals found in the Ruins of Silvermoon in Eversong Woods. They guarded the city until an unexplained malfunction occurred, they now attack blood elves; their former masters.
On aggro Arcane Patrollers will say one of these three lines:
"Uphold the law!"
"Protect the innocent!"
"Serve the public trust!"
It should be noted that these quotes are three of the four major objectives assigned to Robocop.