Knobkierie + Hivemind + Progenitor = viral meningitis for the corp. You still have 1 available MU on knobkierie (progenitor is 0 MU) to throw a medium on, and if you use one of your available MU for a nerve agent, this combination gets nuts quickly. Every sucessful run you can add 1 virus counter to either Medium or Nerve agent depending on whether you ram R+D or HQ, PLUS a virus counter onto hivemind, which counts as a counter on BOTH Medium and Nerve agent. This means that each sucessful run in essence adds a virus counter to both nerve agent and medium, plus an additional one to whichevers corresponding server you ran. Couple that with the fact that progenitor protects the 1 virus counter on hivemind from being purged, and you can essentially bypass the "every virus counter after the first" text on medium and nerve agent, giving them scary efficiency. Add to this disgusting combo that eater is in faction, and you have a cheap and affordable way to sucessfully run servers to boost virus counters before going in there with a more traditional icebreaker suite to instill panic inducing multi access runs on those coporate bastards even the turn after they purged virus counters. Is it a multi card combo that takes a while to set up? Yes. But its all in faction, and all the pieces are useful even before the whole combo is set up.