My Nightfall Summoner Build

So, I recently brought over my ritualist from Cantha, and have bought a few new skills to test out. In working with communing, I found this build worked to great effect. So here's what I came up with:

Communing: 16
Chanelling: 10
Spawning Power:8
Beast Mastery:4

Pain
Bloodsong
Shadowsong
Anguish
Energizing Wind
Fury
Painful Bond
Flesh of my Flesh

Usually I place Pain before casting EW, then begin with Bloodsong, Anguish and Shadowsong. Finally I destroy EW for fury. This puts 5 spirits into the area, placed where they will be most efficient. I then use painful bond on the enemies, and the spirits make short work of them from there.

Anyone have any suggestions for how I can improve upon this?

I was going to try something similar to this myself. Anguish works great with Painful Bond so far, since I'll usually wait to see which target the spirits focus on before casting the hex on it. Looks solid. I might try to work in Soul Twisting somehow to make up for Anguish and it's slow recharge.