The Traitor

Objectives
Kill Sinkeeper Mateo and collect his mirror shard.
 * Mateo's Mirror Shard

Description
Right, looks like I should let you in now.

Can't promise Mateo will be too kind though. I prefer my old boss, but don't tell him that.

Wonder what happened to her. Denathrius seemed awfully upset when they last spoke.

Anyways, let me just get that door open for ya.

Rewards
You will receive:
 * 11,800 XP
 * Venthyr Campaign helmet
 * Venthyr Campaign helmet

Progress
Do you have Mateo's mirror shard?

Completion
He showed so much promise in his duties.

I suppose the promise of power was too much for him to resist. But now is not the time to dwell on such things,. Let us proceed.