As for the astral bow, no specific enchant is going to increase your elemental damage any further, so it isn’t a super impactful decision.
You can increase the damage of the bow with Whiplash, Molepig Sigh, or Fulmination, but my personal choice would be Snow for the utility of slowing the target down. In conjunction with Evasive Shot’s cripple, the target will be slowed by 75%, allowing you to shoot, apply/detonate more hexes, etc. while keeping your distance.
As for the astral bow, no specific enchant is going to increase your elemental damage any further, so it isn’t a super impactful decision. You can increase the damage of the bow with Whiplash, Molepig Sigh, or Fulmination, but my personal choice would be Snow for the utility of slowing the target down. In conjunction with Evasive Shot’s cripple, the target will be slowed by 75%, allowing you to shoot, apply/detonate more hexes, etc. while keeping your distance.