Best boost combo for soul eggs? I think I have a pretty good boost combo.  I wonder if it is optimal, though.  I rely on drones for soul eggs.  My preferred boost is 3x legendary soul beacon and 2x legendary boost beacon.  This amounts to a 150,000x boost to soul eggs.  Then I keep the running bonus up 100% and take down drones.  I can get about 10% soul eggs per run during weekend soul eggs multiplier events.  I currently have 71.5q soul eggs and 31 prophecy eggs. As for artifactas, I have tattered Phoenix feather, ornate carved rain stick, distegguished gusset, and precise neodymium medallion.  I get about 6.5q soul eggs (well, about 9-10%) per run.  Can I improve on that?  This setup really depends in killing elite drones.