Way of Light
Camouflage - Immune to all projectiles while in tall grass. In addition, tall grass hides you while you are stationary.
Pair Camouflage up with Wild Walker and almost nothing can stop you. The only concern would be strong melee-focus characters. Until now, you've enjoyed a healthy advantage over these sorts of foes. Be warned however, warrior-types now have a large array of tricks to lure you into a false sense of security. If this concerns you, take a melee-focused secondary ability and attempt to counter their strength with yours.
Leads to: Myrmidon or Diviner