What about Jace's Archivist as another Windfall effect? Since it is repeatable you can keep doing it to further fuel The Scarab God.
I see you are running Dreamborn Muse. Why not Graveborn Muse to go with all those zombies you are creating?
You also have a lot of mana rocks or a lot of lands (or both). With 9-10 mana rocks (depending on if you consider the Bauble a mana rock) 40 lands seems really high, I would think about cutting either 3-4 lands or 2-3 mana rocks (probably the two Diamonds).
River Kelpie seems like an odd inclusion as it doesn't seem like it is usually very relevant. I mean, you have Snapcaster Mage and Gearhulk that can help trigger it (and itself cf course) but that is about it.
I see you are running Dreamborn Muse. Why not Graveborn Muse to go with all those zombies you are creating?
You also have a lot of mana rocks or a lot of lands (or both). With 9-10 mana rocks (depending on if you consider the Bauble a mana rock) 40 lands seems really high, I would think about cutting either 3-4 lands or 2-3 mana rocks (probably the two Diamonds).
River Kelpie seems like an odd inclusion as it doesn't seem like it is usually very relevant. I mean, you have Snapcaster Mage and Gearhulk that can help trigger it (and itself cf course) but that is about it.