Some predictions from me. Under the hide blocks are more offbeat predictions that amuse me, but I don't actually expect.
Five guilds will back Bolas at some point in the story.
First up, there are the three guilds contained in his color identity. These will be his main and faithful support.
The Rakdos will support him because it seems like Bolas knows and is on good terms with just about every big demon in the Multiverse -- He and the Defiler go way back. It would be cool if
Rakdos has a totally different manner talking to Bolas. "I say, old bean, is it finally time to crush this clockwork world beneath our heels? Ah, tally-ho then!"The Izzet will support him on force of Dragon Cult of Personality. This will probably be because Ral Zarek backstabs Niv Mizzet and gets Niv killed by Bolas, though it would be cool if
Instead Niv backstabs Jace because Niv is the son of Bolas (and some ravnican dragon of no note, possibly making him a Lesser, but not true Elder) from the elder dragon days, and Niv is eager to impress daddy with what his genius has wrought in the meantimeThe Dimir will back Bolas either because just "They're treacherous and always the villains" or, more charitably, out of philosophical desire to fulfill their purpose of tearing down the guilds and shattering their thrones. It would be cool if
Either Bolas summons some shade of Ramses Overdark to manage the Dimir; or Szadek has reclaimed the reins from his base in Agryem.The other two black guilds will temporarily back Bolas, giving his identity a clear "Center" but allowing him to splash all five colors.
The Golgari will temporarily back Bolas. Jace will return Vraska's memories at a critical moment, anguished declaration of love optional, at which point the Golgari will defect and join the native defenders.
The Orzhov will temporarily back Bolas. Specifically, the Ghost Council will make the mercenary choice to "Join the winning team". In fact, they may already have done it -- chambers where law doesn't exist, and so on. Teysa Karlov will manage to down the Ghost Council or at least wrest the guild's forces from them and take most of the Orzhov to back Jace in the end.
The story will end with the Guildpact dissolved (again) -- Jace isn't very pleased with Azor, half the guilds turned on the city, and he has some promises of reform to keep to Vraska. You can bet that they'll all be back in form by the next time we visit Ravnica, though, with the possible exception of new management (and thus identities) for the Rakdos and Izzet. More likely they don't bother to change their business cards even with their paruns slain, leaving status quo utterly restored at our next glance despite ending on a note of sweeping change. This is treated as a good thing and nobody ever calls Jace out for failing to actually apply reforms.
Bolas is a dead dragon walking. I hate this as much as the rest of you do, but I'm considering it the safe wager.
Samut will appear as a major player.
Nissa will show up despite her "desertion" from the Gatewatch. She will become at least temporary guild leader or Champion of the Selesnya and receive a
Planeswalker printing because they worship the worldsoul, she talks to/for worldsouls, therefore they worship her.
We won't get a card for Feather, and if she's mentioned at all it will be to update her status from "rotting in prison" to "executed". Thanks, Aurelia.