[faure]

For the Varkaanans, based on my playtesting of the units, I would suggest the following:

Special Units: Varkaanan Darkclaws, Varkaanan Swiftfangs
Pass & Pass.
Frontline Lockdown: Varkaanan Blade Dancers
High defensive abilities earn a Pass.
Ranged B&B: Varkaanan Greyspears
I have been told that these units can work well with a good screen. Pass. Behind a screen, particularly if you add some height, they are the core of the Varkaanan force.
Shocktroops: Varkaanan Quickblades - their Vault and Lightning Slash (when it's on) can just decimate an opposing line, minimize counterstrikes, and do some considerable damage to heroes.