Here some new Theros spoilers that have not been confirmed. As always I made a True-or-False for you.
1. Medomai the Ageless
This card would be insane if it was printed. All you have to do is give it unblockable and you should get an extra turn after every regular one. I think that we can all agree that it will be a mythic if it is printed.
2. Setessan Phalanx
This card would be great if you could get Nylea out early. A 4/4 with regenerate on turn 4 is amazing.