Ever-Shifting Mirror
Sold by Cupri. This is a really cool item that allows you to see and use portals between Draenor and Outland.
The 
Ever-Shifting Mirror is a toy sold by Cupri in Shattrath City that reveals and activates convergence portals between Outland and Draenor.
Guide awaiting review
Locate Cupri in Shattrath
Find Cupri at 54.4, 38.4 in Shattrath City. She is only available during the Burning Crusade Timewalking event.
Purchase the Mirror
Buy the Ever-Shifting Mirror from Cupri for 
500 Timewarped Badges.
Use the Mirror in Outland or Draenor
The mirror can only be used in Outland or Draenor. When activated, a small purple wisp flies toward the nearest convergence point, and a hazy pink overlay appears on your screen for 15 seconds. During this time you can see and use nearby reflective portals. The mirror can be used while mounted without dismounting you.
Find Convergence Points
Use the mirror near any of these known convergence points: Zangarmarsh at 68.2, 88.46 or at 49.19, 55.37; Blade's Edge Mountains at 46.4, 64.66 or at 39.63, 77.39; Frostfire Ridge at 21.82, 45.31 or at 37.53, 60.71; Gorgrond at 49.41, 73.66; or Nagrand (Draenor) at 50.35, 57.21. Walking through a portal instantly teleports you to the equivalent location in the opposite world, and a return portal is available on the other side.
Tips
The mirror buff lasts only 15 seconds — if it expires before you reach a portal, use the mirror again to restore the buff and regain access to nearby convergence portals.
Using the mirror outside Shattrath City in Outland at 35.27, 12.51 will guide you to a portal leading to the Shattrath City entrance in Draenor at 50.41, 35.19.
