Niantic has announced that there will be a Special Raid Challenge on Saturday, November 3rd, 2018 where Gengar will be available to battle.

Gengar steals the spotlight in a Special Raid Challenge!

Trainers, Are you ready for a challenge? On Saturday, November 3, there will be a Special Raid Challenge! For three hours, Gengar will be available in Raid Battles! Take a look at the details below by region: Date + Time

• Nov. 3, 2018
• Asia-Pacific: 12:00 p.m. to 3:00 p.m. JST (GMT +9)
• Europe, the Middle East, Africa, and India: 9:00 a.m. to 12:00 p.m. UTC (GMT +0)
• The Americas and Greenland: 11:00 a.m. to 2:00 p.m. PST (GMT −8)

Features

• Gengar will be featured in Raid Battles!
• Receive up to five Raid Passes from nearby Gyms at no cost.
• If you’re lucky, you may encounter a Shiny Gengar!

Do you have what it takes? Get ready to GO, Trainer—and best of luck! Stay safe, and happy exploring!

Source: https://pokemongolive.com/en/post/gengar-specialraid/