The savior sword witch?

I play soulwrest summoner pretty much every league that I play more than a few hrs. I got the sword to drop and before selling wanted to test it out on some kind of summoner build (obv SW would have to go).

any suggestions on Witch builds that would get GREAT use from this sword. I dont want to level up another character just to mess around. i have around 20ex i could spend to get there.