The ghoul is kinda of hard
Unlike Ra, there is no association between Osiris and dragons
Bartolom del Presidio should fit into an Agatha's Soul Cauldron deck, maybe with vampire buddies like Dusk Legion Duelist and graveyard finisher Voldaren Thrillseeker, if you can also manage to go wide, this can lead to a quick finish
Mythical Islands Eevee is a perfect new example of this: a reliable 20 damage is unlikely to make a difference anyway, but a small chance to wound exs and OHKO Basics with 40 damage or more is exceptional value for an evolving Basic
Necrogoyf Profane Tutor Force of Vigor Terminal Agony Ignoble Hierarch Tourach, Dread Cantor Sword of Sinew and Steel Persist Dismember Dauthi Voidwalker Ornithopter of Paradise Nested Shambler Brainstone Formatting won't allow me to show the retro frame, but all of these do various bits to your end, and have a retro-framed alternative printing
I hope this article brought you some new information or sharpened your ideas on control decks in Premodern