Bring back MoP elemental shaman gameplay in Shadowlands

[Mooseraddish-illidan]

@Malfurön-frostmourne

Spirit Walker’s Grace
This ability should make a comeback in the form of a talent option, since most casters are no longer as mobile as back in the days, this ability should replace Ascendence in the last tier of our talents.

I believe this is baseline for elemental in Shadowlands Alpha right now sir.