I understand the anti special character elements out there, but really, if you want a monster army, you HAVE to use throgg...
Kholek is fun to use, he's also immune to other lightning attacks, such as warp lightning and there's a few others around the place whose names escape me, generally they're quite nasty when they arise.
The army itself is very fast and highly resilient, the trolls can lay down the hurt versus armoured or light opponents and can really weather a beating back. (if I put them in units of 10 I can lay out 10 automatic vomit hits at S5...).
Unfortunately Throg is written to only allow leadership and re-rolls for break tests

. You need a bsb to re-roll stupidity.
Anyways, next tourney I'll let people know how Kholek does...