Enchantment Sagas keep glitching on me. There has been a lot of games where sagas either work on step one then not on the rest, the first 2 steps happen simultaneously, or none of the steps work at all and the saga card just enters the battlefield. It can happen when playing the saga from hand or replaying from a Yorion. This happens on both Mac and PC. It has unfairly won me some games but, for the most part, has lost me more than i've won.
I had 2 Binding of the Old Gods out. I cast a third one and they all stopped working. The third one did nothing upon entering the battlefield.