A ranged build, specifically using crossbows and relying on either the Shadowdancer shadow or a blackguards undead/fiendish summons to draw attention.
I've been tossing around the idea but I haven't had time to flesh out an actual build.
Vaguely, Blackguard levels would make use of divine might to stack CHA bonuses on ranged attacks (basically dumping as many damage bonuses as I can to improve ranged damage).
There isn't much information regarding the shadowdancers summons on the wiki compared to the other summons available (almost none, really) so I'm not sure what to do exactly with SD levels other than use HIPS to relocate when things get too close and use the shadow to tank.
Why crossbows specifically? I could BS and say it was to take advantage of the higher crit range, but really I like the concept of a special-ops commando using a repeating crossbow. I've done epic level throwing weapons experts and archers, but I've only dabbled with crossbows on Arelith.
Also, trying to do the math for arcane quiver with AA's makes my head hurt.