Got mine form 3 of coins last week. So good. And the only current elemental primary. Last night I spawned into the dreadnought and the enemies were moving against each other. I noticed a spawn door where thralls and acolytes were pouring out of and spent the next 5-10 minutes sitting at the door mowing them down without ever taking my hand off the trigger. Never got anything out of it, it was just hilarious to sit there and watch how quickly they were destroyed with the chain lightning going crazy and unlimited ammo