Or, ya know, you could do what I suggested and have all 5 people still doing damage (almost double damage with tether) and clearing out adds at the same time. Not sure if you guys know what "blood bound" is but it basically makes all enemies tethered take damage while you shoot one target. It doesn't split damage either. So as your doing bonus damage to the boss you're also killing enemies without even knowing it. What I'm trying to say is warlocks aren't useless, but there are definitely way better options.