Hard to say what would be the best but I’ll take a crack at it:
Tree#1: Offensive Auras(Paladin)
Tree#2: Shadow Disciplines(Assassin)
Tree#3: Bow&Crossbow(Amazon)
Build would be as follows:
20 Fanaticism
20 Burst of Speed
20 Strafe
20 Guided Arrow
20 Multishot
6 Prerequisites
Equip a Mist(for Concentration aura and 100% Pierce) and proceed to dominate like no other.
Edit Now that I look at it… I want one… 