Astral Storm 1.5 minute cooldown
Calls down waves of falling stars upon enemies within 40 yds, dealing Astral damage over 8 sec, and allows you to cast while moving.
I would put this talent bellow the 20 mark as a it would be a strong aoe burst ability, but also usable on single target for a bit of extra damage and being able to move.
It would keep our niche of having good spread aoe without being too good at it that multiple Boomkins are required for a spread AOE fight.
I believe having this and ground targeted Starfall would lead to us being able to compete on high AoE damage without being overpowered like before.