What are Invasions?
Invasions are limited-time events for the Arena mode in Injustice 2 Mobile. These events last for the duration of the current Arena season. You can participate by selecting the Arena from the home screen while the event is active.
Up to 3 times a day a special opponent will randomly substitute in for a member of the opposing team you’ve chosen to face. An Invasion can really stir things up by adding new passive abilities to the opposing team, so choose your team wisely!
Defeating the opposing team will award you with a varying amount of the Invader’s Hero Shards and chance to acquire their gear in addition to the regular Arena season and Milestone rewards. All Invasion featured heroes are Gold and unlock at a 2-Star rating so you get to unlock and start upgrading the character quickly.