First off, beautiful shot. :) He's definitely
lookin' pretty menacing there, but it's not a shot
of Evil Tamahome. 

E.T. (heh) wore black during that time, his hair
became much darker and he also had the telltale
evil earring that was given to him by bishi
bad-boy, Nakago. From what I can tell, your cel
might be from the beginning of the series because
it looks as if he's got the ancient Chinese outfit
on. I know that's not exceedingly specific, but
hopefully it helps!

-Megan