The branches are of unknown origin,i will put below a chart to explain

Not glowing-asleep

Very dim-awake

Dim-calm

Glowing-annoyed

Bright-frustrated

Luminous-angry

Radiant-furious

Sparkling-mindless(mindlessly rampaging until he calms down)

Any thing more and loud whispers can be heard speaking in incomprehensible tongues when near him,this is simply spirits warning people nearby to run,nothing more
"Run"
"Flee now!"
"Get out if here"
"You must run!"