Astrologian DPS

[Ballooooon]

The only mistake is using lightspeed followed by gravity spam, other than that this suggestion looks good. Dungeons are so easy that you shouldn't need to use cooldowns to save someone. Just use them to make things go faster.

But why do you use Synastry in combination with HoT skills. Synastry has no effect on the regen amount.

Synastry increases healing potency by 20% since 3.07

Edit: MidnightTundra covered it