I have a nice large mob combo that I use often with D/D.
The utilities I use are, Glyph of Elemental Harmony, Signet of Air, Signet of Fire and Glyph of Storms. For Elite Glyph of Elementals.
I start off with Air, charge in on #4 then I use Signet of Air for AoE blind. Switch to Fire use #4, switch to Earth use Glyph of Storms (Sandstorm an AoE blind for the duration), use Earth #5 then #4 they’ll die by bleeding and if not use Earth #2.
Works every time, even those pesky Centaur knockdowns will miss inside the Sandstorm (it’s essential on this combo) I use on a very large pack and I mean a lot. Sometimes there would be a few left, just switch to Water use #3 #2 #1.
Looks kinda complicated (not really) but if you’re used to switching attunements it flow so quickly.
Note: You can actually remove switching to Fire and not use #4 the only reason I use that is for Area of Might ( Fire #4 + Earth #5 or #4) which gives more damage for your next skills.