This is a really cool idea for a creature cheat deck. I've played a casual polymorph list once, and there's a thing I learned from that: Don't play cards that have the potential to simply strech your execution. Profane Tutor seems like it's just that, here. If you cascade into it, you tutor for a card, which is cool. But if you really need to flip sth. into play, hitting it is basically a whif. I didn't look over your suite of boss monsters, but maybe Wild Pair would be better in that slot.

seshiro_of_the_orochi, I've been back and forth on including Profane Tutor. In practice it's been working out for me, but I understand your concerns about it. The cascaders on three will hit it to set up Eureka on four, but yes, it can be underwhelming when it's hit by The First Sliver on five. It used to be Glimpse of Tomorrow, but I found that spell to be a little too random for my liking. Still looking for the perfect card for its slot.