orn and sion on the same team sounded broken in my head
and then i got him in 3 of my games, lost all of them and realized that the ornn player wasnt shit, it was the fact that ornn is a balanced tank and the other team had galio, sejuani (2 completely retard proof tanks) so they automatically win mid game/late game team fights.
You need to rethink your standards of what tanks are.
Unless you have %damage reduction or absurd armor steroids you have no fucking business building as a tank because you get nutted on by everything late game