Did the nightfall recently and the other two in my group got some coins and shards. I got a primary weapon legendary engram and was immediately jealous of the other two because I like having coins for choice and need shards to upgrade gear. I knew I'd be getting energy for the damn purple ball. Sure as shit, I turn in the engram and get two energy...not even a weapon to dismantle just two straight energy. At least I have the xp buff so it's not a complete waste...that and this nightfall is super quick to get through.