I think 'solo' decks generally benefit from running allies. They act as meatshield for one and can provide board control/damage with the right opportunity. Plus they force opponents to deal with them and not sac all their ally control.

Here Devoted Knight is too good to pass up. Tainted Oracle too most likely. Eriss could provide a win condition and an infinite Embers loop.

For starters I'd play these three over Server Ties, Forgiveness and Divine Connection.