Magic Pet Mirror
Source: Vendor. With , imagine a pack of zerging a raid boss.
The 
Magic Pet Mirror is a toy from Draenor that transforms you into the appearance of your targeted battle pet for 10 minutes.
Guide awaiting review
Locate the vendor
Find Tiffy Trapspring (Alliance) or Giada Goldleash (Horde) to purchase the toy.
Purchase the toy
Buy the Magic Pet Mirror for 
500 Shiny Pet Charms. The toy will be added to your Toy Box.
Use the transformation
Target any battle pet and use the toy from your Toy Box. You will gain the Mystic Image buff and transform into that pet's appearance for 10 minutes. The toy has a 1-hour cooldown.
Tips
The toy only works on battle pets—non-combat pets cannot be targeted.
You cannot cast spells while transformed, or you will lose the transformation effect.
