Burst Medi/Trap Roamer (Help!!!)
Use LB if you want to beat ranger(at least bad ones), revenant and engineer.
You have no chance against elementalist and tanky ranger.
Use shelter, smite, test of faith, contemplation of purity instead of JI (it will save your life cause 70% roamers are condi based) and RF.
I think the best tip I can give you is to watch my videos
I make PvP & WvW videos
A full zerker Staff/LB druid is probably one of the most terrifying opponents for a DH to face. A competant one will have a lot of access to stealth (LB3, Smokescale f2 + staff 3, traited Celestial Avatar) and decent stun-break/stability access so it’s difficult to land a burst on them. If you make a mistake and they land rapid-fire on you, it’s lights out.
For your weapons, I highly recommend running either GS & LB or Sword/shield & Longbow (druids honestly don’t have that great of a way of dealing with the second weapon-set). Run Shelter instead of Purification. Purification is great vs. condi-builds and vs. melee-based classes but you’re going to need every block you can get vs. a power-based druid. Your utilities are otherwise fine. Try to stay close to them and land smite condition (through your heal and through utility) as often as you can and burst them after you see them blow utilities or after dodges. Use your blocks and projectile defences in anticipation of rapid-fire. Lastly, count the seconds they’re in stealth. They generally can’t stealth for more than 3 seconds, and tend to burst you with longbow from stealth. Near the end of their stealth period, prepare for that burst.
For fighting other regen/high sustain builds, just remember that they likely can’t chase you down. You should kite, bait them into blowing their utilities, then lay on some burst. To do this, you should probably use Longbow instead of Sc/F.
Finally: Ragnarox has some good advice; don’t be afraid to change out your utilities to meet the situation. Contemplation of Purity should be seeing some action on your utility bar; especially if you’re fighting a condition mesmer/necro/warrior. Watching the videos of other roamers can also show you how to handle specific foes and mrauls has some outstanding vids (his wvw roaming and his spvp vids).
Good luck and have fun!