The Omnidroid City

 is an attraction released with the Incredibles Event Update on 15th June 2016. It is unlocked after completing the Take Down Downtown quest.

It can be purchased with Elixirs from Merlin's Shop by players who did not obtain it during the initial event.

Trivia

 * was a Legendary Chest prize in The Incredibles Legendary Chests Promotion on 6th January 2017.
 * was released again, losing it's limited time status, and the rewards decreased from XP (23), Magic (115) to XP (14), Magic (80) with the Easter, Earth Day Update on 12th April 2017.