Personal Key to the Arcantina
Quest reward from The Arcantina. We enjoyed the 40 hours we could use this as a faster hearthstone option, however now it returns you right back to where you used the toy instead of Silvermoon City.
The 
Personal Key to the Arcantina is a toy obtained through a quest in the Midnight expansion that allows you to teleport to the Arcantina, a location connected to Silvermoon City.
Guide awaiting review
Obtain the Toy
Complete the quest chain associated with the Arcantina in the Midnight expansion to receive the Personal Key to the Arcantina as a reward.
Use the Key
Activate the toy to teleport to the Arcantina. The toy has a 15-minute cooldown, and using it will transport you to the Arcantina rather than directly to Silvermoon City.
Return from the Arcantina
When you leave the Arcantina through its exit portal, you will be returned to the location where you originally used the toy, not to Silvermoon City. A permanent portal inside the Wayfarer's Rest inn in Silvermoon City also leads directly to the Arcantina if you need another way in.
Note Quest Use Inside
A questgiver inside the Arcantina can send you through a portal to Outland to complete a quest. After finishing that quest, you can use the toy to return directly to the Arcantina to turn in the quest and collect your rewards.
Tips
If you log out inside the Arcantina, you will be relocated to Silvermoon City upon logging back in rather than remaining in the Arcantina.
