Getting you inside the Sunreaver's Sanctuary will be tougher than it appears. Only those who possess Sunreaver tabards are permitted entry to sanctuary. If we can get our hands on one, a simple enchantment will do the rest of the work.
On the balcony above Threads of Fate, you'll find Shandy Glossgleam. I've helped him a few times in the past, so he owes me a favor. He handles laundry for a wide variety of people in the city. Maybe he can find a way to 'lend' you a tabard for a while.
I knew Shandy would find a way to come through for us. Let me get this enchanted and ready for you to use. The sooner you get done with the tabard, the sooner we can get it back to Shandy and the better the chances that its owner will never have missed it.