Jace is the clear best but much of this is down to the great versatility of the card beyond the mere capacity to bounce
While it's easy to leave some creatures behind to defend you, it's a much safer bet to have your life total higher than anyone else's at the table, with an easy way to keep it climbing
The deck is entirely about casting and supporting enchantments: ramping them out with cards like Jukai Naturalist, draw cards with Sythis, Harvest's Hand, wiping opposing creatures with Doomwake Giant, and eventually overwhelming the table with cards like Sigil of the Empty Throne
In the past, we used to put our prediction results from the previous set in the upcoming sets predictions article - which worked for a while, given the release schedule of the past year
Until the next game begins, of course