Absolute Anime

Well, Envy could just toy with Sessh, using his shape-shifting to mess with his emotions so Im pretty sure he could win

Tell me, does Sesshoumaru really strike you as one to let his emotions enter a battle? The fact is Sesshoumaru isn't going to fall for some silly shape-shifting abilities that futily try to mess with his emotions.

If he turns into Sessh's father that could do something

Please read my above post.

I think Envy would win since he's almost immortal even though he's not that strong. that's ol.i'm sorry that i'm boring.