So recently I have seen a lot of HoTW records and it is disappointing to see elementalists not utilizing fresh air or high damage burst skills, if used effectively the elementalist has very good under water damage
So we start with the traits 66200, this will allow for fresh air and persisting flames, two very important traits in this build for fury stacking and consistent damage. You will also want internal fire, burning precision, bolt to the heart, air training and stone splinters.
In Fire attunement your skill 2 is a fire field and does good damage over time. In Water attunement your skill 2 is a projectile which does decent damage and heavy damage on detonation, much like Napalm on engineer. Skill 3 in water is also heavy damage, detonate in the same way, it is also a blast finisher. Skill 5 in water is your heaviest damage skill in water providing the boss is near a wall or an object, you can sink bosses to the ground and face towards the floor if the boss is not near an object, use it in the same way which you would use FGS 4 in the past. In air attunement your auto attack is very good damage, you also want to be using auto attack on this attunement, also skill 2 is moderate damage as well as providing vulnerability. Skill 4 can be used as a rupt, skill 3 as a gap closer and skill 5 is a static field, but hard to position effectively. In earth attunement skill 2 is good damage, skill 4 is a decent sink (2 seconds) and skill 5 is a blind, useful on the end boss in HoTW p3 to blind the jellyfish detonate.
Your elite is useful at times when you can’t get very close to a foe for example the hotw p2 boss without getting rekt by his auto attacks, it also has good aoe and a pull, you should use the utils in the video. The other skills are less useful and not worth using the vast majority of the time.
Essentially you want to utilize the auto attack damage in air attunement, with the burst skills in other attunements, thanks for reading and here is a visual guide:
https://www.youtube.com/watch?v=Q-Sj48me_2Y