On Hordes...

I like how the army changes dynamics so much with the change of warlock.

That said I'm trying to think of a 350 list for Borka. I guess I never thought that you could double or chain throw a model. i.e. throw Borka from Dire Troll Mauler to Earthborn Dire Troll; then throw Borka from Earthborn @ the intended target. BLAMMO! I know Borka Bombing is not a technique to rely on, but at 350 Tooth & Claw I think it's doable.

Borka Bomb 350 T&C, possible regular list:
Borka Kegslayer
    Kenny, the Pyg Keg Carrier
Dire Troll Mauler
Winter Troll
Trollkin Longriders (min)
(edit: Longriders would not be allowed in a Tooth & Claw list)