Magister Xintar

Magister Xintar is a night elf mage who specializes in portal magic. He accompanies Sentinel Lyalia and Lorekeeper Vaeldrin in their quest through Krasarang Wilds. His magical abilities were sundered somewhat when he was caught in a Mogu trap, also causing him to not be able to stand up straight. He later moved to the Shrine of Seven Stars in the Vale of Eternal Blossoms.

After Garrosh Hellscream unleashed the sha in the vale, Xintar moved before the shrine helping the Golden Lotus warriors to defend the place. He can also be seen on the Timeless Isle overlooking the Celestial Court with Ella. He dares not to create a portal on the isle.

Gossip
I almost hit my goal of ten mage portals without incident. Those thrice damned mogu ruined that with their trap.
 * Krasarang Wilds

The trap sundered most of my abilities but I should be able to manage some more local portals.

There is some kind of barrier that shields this Vale, preventing my use of portal magic.
 * Shrine of Seven Stars

Speculation
As a mage, he may be part of the Highborne.