Hmm plate armor has potential, both to buff the otyugh and to save the druids. Then the oty, even un-upped, could eat say a firefly queen or a owl's eye.
I did have two steals in at first, but since the deck doesn't draw extra cards, I think the steal made the deck less consistent. Even though steal can work great, sometimes you don't need a steal and it isn't a useful card. However, you always need cards to kill creatures, so more focus was put on making sure you can kill the creatures that will come at you. However maybe a butterfly effect could fit in nicely, play it on an otyugh for gods like Gemini where you have to destroy lots of permanents.
Dusk mantle could work well, although I think with 4 shield in there, there may be enough already. Plus the dusk mantle is a bit pricey at 6 dark quantum, which can be hard to get out in a short time frame. And there is little healing in the deck, so complete damage prevention can be important later in the game.
And yala, the sundials each let you draw one more card. So since they replace themselves, it is sort of like a 33 card deck, with no drawing. You just have to draw the right cards. The biggest use of sundial in this deck is letting you save up quantum. The quantum pillars work slowly, so you need those extra turns to be able to play phase shields and rain of fire.
