Board Thread:Question and Answer/@comment-216.232.130.49-20160420201533/@comment-27040063-20160430200127

Late reply but from what I see on my second account which only has my main added, it seems to go by highest attack and oldest among cards in your units (regular and EH), choosing from between up to 3 of them. I used to get Speedster, Elemental Queen, Summer Oracle because those were the oldest cards I maxed. But taking them out of my units, I get my more recent maxed GURs like Halloween Hades, Chione, and Jean. Then when I have Speedster and Summer Oracle back in for AUB, I end up getting them again instead of the more recent ones.

I haven’t figured out if there’s a criteria that determines who you get assists from although it feels like the game doesn’t choose from your entire list of comrades since there are some I get a lot and others I never see assists from. I don’t think it’s log in time either because I’ve gotten them from people who hadn’t been logged in for days too. And sometimes, I’ll get one from a lower level comrade who doesn’t have a GUR so it’s not necessarily picking comrades with the strongest cards.