Guild Wars 2

So I just got my necro to 80 (my first 80) and bought full Rabid gear with all Superior Runes of Undead. I’m looking for a good small group/zerg build with good survivability. I like to sit in the back and drop aoe but sometimes I like to run in and death shroud aoe or plague aoe spam. Any suggestions that my gear would be good for would be greatly appreciated.

Also if there are any instructional wvw videos that can teach me some things I’d love to see those too.

Thanks

I’m starting a warrior and want to spend as much time in WvWvW as possible. However, at low levels I feel too squishy to join the melee train. Should I just sit in the back shotting stuff with my rifle/longbow? Any advice on 20-80 traits and whatnot for WvW would be appreciated.

Are engineers able to escape if spotted by a small group?