The Importance of Unanimous Consent in Orthodox Christianity

Once you admit that something like unanimous consent could constitute an infallible guide to truth, right? This would be a post-apostolic authority. I think once you open the floodgates of tradition, I feel like it all just comes pouring in. Once you accept that the church has that ability to bind herself to certain beliefs, well, did she not also do that at the First Council of Nicaea?"