I will take this over to this thread: 5E - Mythic Odysseys of Theros on DNDBeyhondSweet. I'm more excited about Theros than I have been about some other releases. Mostly because Greek-themed campaigns seem like they have some room to do different and cool things with a campaign. When you have a chance to browse through it I'd love to hear what you think of some of the rules for mythic creatures. We've had some spoilers, but not a lot of detail.
So as not to have two threads, I will take this over to this thread: 5E - Mythic Odysseys of Theros on DNDBeyhondWhat are the monsters like?
Is the bestiary extensive.