Guild Wars 2

My brother has a Zerker war and we like to roam just the 2 of us. I have a Guardian, engi, and thief I could play with him. Recently I have been lvling an Ele and I dig it so far. I love D/D but hear that for support you should go staff?
My question, is there a build I could run d/d and still support him since he will do most the damage. I would like to use water and passive regens to add to his healing and I want to provide steady dps and cc. This is for 2v2 and more type fights. Im new to ele but before I get to deep into it I was wondering if what I want is capable of the class with this setup. Thanks

I like D/D with aura sharing (30 water) and protection on aura (10 earth). I love applying Shocking Aura and Frost Aura to my team mates. You can share some stability with Rock Solid (20 earth). Lastly water will heal and regen (5/15 Water) when in it along with some healz with water dagger 2 and 5.

The fire fields and earth knockdown/cripple/immobilize also work well with team mates.