Would be an incredible talent 
An aura is a cool idea. could maybe be tied to her tranquility passive. maybe switch out “centered” talent.
I dont think “World aflame” should be switched out tho. since it’s so powerfull.
Well I hope there someday comes an Big balance beta focusing on unused talents.
Like Unchained has also some talents also wich I think nobody uses.
If you read The Curse of the Second Talent Row
u’ll see what I mean.
All in all I just think BW just needs a bit of nudge. DoT dmg is the thing I would like most.