Killian, Decisive Mentor Black-White enchantress sounds fun, and a goading/aura subtheme feels novel enough for Orzhov/Prismari
If Machine God's Effigy copies a Saga that has become a creature due to an effect, it will have that Saga's chapter abilities, but it won't get a lore counter every turn because it isn't itself a Saga since its only card type is artifact
Map tokens come with an ability that lets you (at sorcery speed, so in your main phase with nothing else on the stack) pay 1 mana, tap the map token, and sacrifice it
Paying 2 each turn just isnt feasible, although I could imagine a world where sacrificing it could be beneficial, but this is highly unlikely with the powerlevel being where it is
You cant beat the name Scuttling Doom Engine