Because this deck has such a wonky curve thanks to all of the fatties, I suggest playing cards like Sensei's Divining Top, Mirri's Guile, Sylvan Library, and Scroll Rack to control not only what you draw but also what stays on top of your deck (which I guess is the same thing but it's important with Mayael!)
UW Landstill / control Out: 4 Sandbar Merfolk, 2 Sandbar Serpent, 1 Drain Life, 1 Gilded Light, 4 Smoldering Crater In: 4 Miscalculation, 4 Misdirection, 2 Twilights Call, 1 Songs of the Damned, 1 Expunge Strategy: turn 2 Fluctuator with Misdirection or turn 4 Fluctuator with Miscalculation and Misdirection is fine
Jeskai mill, anyone
That said, its worth mentioning that pairing every form of indestructibility with board wipes is a payoff on its own
Just trying it out to see how it feels
Cascade was one of the most busted keyword abilities ever created in Magic history, and Dinosaurs even feature a card with that text (Annoyed Altisaur)