Gnomeregan Conjuror

The Gnomeregan Conjurors are two pairs of gnomes mages that can be found on the Alliance side of Stair of Destiny in Hellfire Peninsula. They first appeared during the Dark Portal Opens event, where they summoned Lord Marshal Raynor‎ and his Stormwind Marshals.

The first two gnomes have created a portal to Stormwind City where reinforcements arrive to aid in the battle against the Burning Legion. Stormwind Soldiers, Ironforge Paladins, Darnassian Archers, and Stormwind Mages, and from time to time, Justinius the Harbinger, all come out of the portal and rush to the base of the stairway to aid in the battle against the Burning Legion forces led by the Pit Commander.

The two other conjurors have created a portal to the Blasted Lands after the Dark Portal was closed down.

Quotes
I must conserve my energy... there's no telling when my portal magic will be needed!
 * Gossip during the battle of the Dark Portal