EX Raid Battles
ex raid battles (Exclusive Raid Battles) are a special type of Raid Battle that is by invitation only. On given occasions, an EX Raid Battle will be assigned to a Pokemon Gym. Anyone and everyone who has participated in a Raid Battle at that given Gym in recent times will receive an invite to participate in the EX Raid Battle, being given a special EX Raid Pass in order to do that very thing. Since the invitation to EX Raid Battles are done days in ahead of the event, it allows for players to allot time to make the raid. However, due to EX Raid Battles being by invite only, they are extremely rare and there is no possible way to determine when and where on will drop ahead of time.