User blog comment:A Simple Injustice Enthusiast/New Ninja Batman and Ninja Joker Pack (drops rare stuff)/@comment-27921889-20180706003917/@comment-35148957-20180706191059

You certainly could :). Another thing I'm surprised is that they drop MP exclusive Unhinged Joker but not Batman/Flashpoint :/.  I just got Batman/Beyond to Elite VII and My Elite VIII Unhinged Joker finally has 3 extra copies. Happy Farming :)