Paragon is the new MOBA from Epic Games. It's currently still in Early Access before going free for an open Beta August 16th. Getting in now requires you purchase a starter pack, but all PS Plus members are going to be getting a Starter Pack for free next month.
The Starter Pack will include a 3 win Rep boost and Master Challenges for three Heroes: Murdock, Rampage, and Gadget. The Challenges grant an immediate Challenger skin and permanent XP boost and completing the challenge unlocks a taunt and Master Skin.
PS Plus doesn't always come through every month, but over the course of a year it really pays off and next month seems like it could be one of the better ones.