Pure Valk

[GriffonSpade]

To put it more bluntly, you're in for a world of frustration if you want to use Valk as your primary/only offense.  Her detection range is pretty much the smallest of any minion in the game, which means she has to be almost on top of an enemy before she'll engage them.  Yeah, she's tough, and at higher levels she packs a wallop, but her primary function is to keep monsters busy while the 'zon opens up with her real attacks.
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In other words get strafe AND valk. LoL. Sadly evade and the like pooter out after level 6 or so, so its essentially pointless to add more than like 5 points into them.

If you truly want a valk-zon, you'd probably want to either go with Beast or Passion.

You(weapons)-
Passion with additional +3 ALL skills will provide a 5 swing zeal and berserk.
Beast will provide a level 9 fanatacism aura
Call to Arms + Spirit shield backup will provide a decent battle orders and command to you and your minions

Merc(weapons)-
Harmony on act 1 merc will provide 10 vigor aura
Faith on act 1 merc will provide 12-15 fanatacism aura
Pride on act 2 nightmare offensive mercenary will add both might aura AND 16-20 concentration aura

Other-
Dragon armor/shield provides level 14 holy fire aura each(stackable?), (20% 18 venom when struck too)
Dream helmet/shield provides level 15 holy shock aura(stackable?)
Bramble armor provides 15-21 thorns aura

Basically, it'll be massively expensive to build a strong valk. Though I suppose if you could also manage to survive you could have a zealzon in there too lol.