D\RT Destructive was Glaive enchantment bomb

any opinions on this build?
mysticism-8+1 from minor rune
scythe mastery-8+1+1 headpiece and minor rune
earth prayers-6+2
channeling-12
skills
mystic sweep,pious haste,dust cloak,staggering force,heart of holy flame,
faithful intervention,vital boon and Destructive was Glaive (elite)

i use this build in AB alot with a few guildies with the same build running and a paragon for Defensive shouts and we do quite well. What do you all think?

A description on how it works would be useful, at least how you run it.

I don't really think DwG is worth it for use on a Dervish as an Elite..
Doesn't Mystic Sandstorm also bomb your opponent by ending all enchantments and also inflict damage?

Why not just use Pious Renewal, Imbue Health, Mystic Sandstorm? :|