Auralike effect on full object?

Hello all,

First time using this so I hope I'm doing this properly.

I'm hoping someone can assist me in pointing me in the right direction to achieving a full body aura effect like shown above.

I was going over some concepts and thought it would be really cool to have the character acquire this full body shadow aura type effect.

I was tinkering with the VFX graph and thought I could do it that way to give the slight flamelike effect radiating around the entire body but I can't seem to figure out how to get it to spread to the entire object.

I've tried with a cube and other generic objects thinking I could do this like I would a with shader graph but it seems that I need to stretch and skew the effect.

If anyone can give me any ideas on how to go about doing this I would be greatly appreciative