Detailed description:
The PCs are trying to start a war. They've been pushing on the Silver Flame folks that live in Breland (Eberron, obviously). Due to various successes, a bunch of Silver Flame folks are hiding in the church, with the menfolk outside on the steps, protecting the church. In addition to the menfolk minions, there is Inquisitor Dorn and his high level pals from the Last War. So 4 powerful NPCs, and as many minions as I want.
The PCs, having engineered an atrocity and pinned it on the Silver Flame, are being swept up in the mob and headed for the church. So when they get there it will be the 7 PCs and as many NPC minions as I want. This batch of minions will ultimately be controlled by my players.
The real key here, is that PCs really only care how many townsfolk die. The goal is to create carnage, lots of it, and probably egg on the minions on either side to kill each other. If Inquisitor Dorn ends up killing a bunch of Brelish townsfolk, even better.
I'm thinking Bluff or Diplomacy as a minor action (don't want minion attacks to be all a PC gets to do) goads minions on the PC side to attack as the player directs, an Intimidate check vs a specific enemy makes a handful of minions attack that one enemy, and no rolling for minions (there's enough rolling already!) just auto damage. I suppose I don't need an aura for that, just a auto hit.
As this is a fairly climactic battle I could stat up some swarms and use those for crowds too. Hmmm, perhaps the right skill checks can turn a batch of minions into a swarm . . .
Also, the previous 2 sessions were both entirely skill challenges, so I don't want to go there again. We've pretty much already set the stage with those, now it's time for the big finale.
PS