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Ss range, wm range, hor range, rest in passiv dmg (pve build).
Or if u dont want range, 5 passiv dmg (pvp build).

+1 for adding the taunt upgrade to horn of renew. The range is already plenty good without the extra upgrade, so no need to max it. I'd add another point to skyward smash, but for the range one, not...

Cs is for pvp, maybe after patch it will be usefull, if they will add more skill slots.
Str never enought, so yes, go might.
No split, all in str, unless u wanna make some retard tactic like dodge...

Yes, only lvl65 Fang items can be crafted :)