Couldn't find a really good example, but I hope this is good enough. Something I noticed and never understood...
https://media.giphy.com/media/xlAfEvt3RAs38pghrz/giphy.gif
You can see him shaking/shivering in the last seconds of the GIF.
Probably something along the line of "he is pumping so much power through his body, it is not able to handle it".
The body he’s occupying has Parkinson’s
Struggling to control a godly power with a freil human fleshbag of a body. What happens if he overloads? His body melts and disintegrates, proven by the "Darkness" short read.
Could be what others have said relating to anger and power.
It could also be excitement. He's a bloodthirsty dude, and when he ults there's gonna be blood and he's probably amped for the fight.
Lots of potential reasons, none are for sure though.
TRIGGERED
Don't know why he does it, but it looks hot and now I have a GIF to feast my eyes upon.
HE's mad AF
