Q:
WvW: Power or Condi?
Depends. small man roaming condi and power are both pretty solid. For zergs people tend to go power unless you join a guild that does condi stuff. Id personally go power
Bad Elementalist
Join a good guild 1st before you commit to ascended set, as your 1st one will be time consuming and somewhat difficult to get.
Talk to your guildies and see whats needed. You can go both ways, only thing to keep in mind is that a condi build will lag out much quicker during 3 way map que battles then a power build, while a power build is somewhat neutered cause all your condis and corruptions (including your best well) are worth crap.
The current meta for zerging has moved from power to condi. Spiking a target with loads of conditions and then spamming epidemic is the in thing. Since zergs run super tanky nowadays (I’m talking organised zergs, pug zergs don’t count) power necro has fallen out of favour due to the low damage it does against tanky targets. Condi is especially good when taking out siege, as you can epi off siege (which cannot condi clear).