[Gustoo]

Get a swarm caller. Melee and arrow kite

Thats all you can do.

Velious will give you panic animal so you can fear kite, which is better.

You should use swarm caller until it procs then switch to the 2x wurmys or something DPS and then back to swarm caller to keep mob slowed.

You should have basically infinite mana for healing yourself after these battles sitting down while casting and stuff like that.

Regen BP of some kind helps a lot.

As mentioned the rain caller has charges so that aint gunna help you except for those stats.