Sorry for spaming, but I really like messing around with Aminatou Another idea. I know your deck focus on blinking, but I think that top deck manipulation is worth consider too, even a little. A lot of creature with etb have high mana cost, so I added card like Cloudform and Primordial Mist so I can manifest some big creature like Emeria Shepherd or just make land I don't need into 2/2. Then you could transform this usless 2/2 into samothing good with Proteus Staff, what do you think?

Omega505: There's no harm experimenting with a little top deck manipulation. I think that primordial mist is a fun card to try out in Aminatou to cheat out fatties.

Haha, yes I overlooked the Scrivener card. I had a moment of dyslexia and I think my mind put the word sorcery in its text >.>

I would then change it in my deck as well. I think Cataclysmic Gearhulk is a solid inclusion. It is a somewhat pseudo-boardwipe that brings hate to the table, but not TOO much hate in that everyone gets to keep a few things of their choice in play. As someone mentioned though Sigarda, Host of Herons doesn't care if you play Cataclysmic Gearhulk. But that is very situational mainly on that deck alone.

Ancestral Knowledge to me is a great 2 drop. Being able to essentially Dig Through Time with 3 additional cards mind you, is incredibly powerful to set up a game plan. Not to mention you can choose "0" as a number so you're not exiling anything away. Just blink it as need be, and to knock off the age counters.

Primordial Mist is an interesting approach. As said this can easily cheat you into free fatties, and a 2/2 usually flies under the radar, no one is usually too concerned about 2/2 manifested creatures I feel like. However the only problematic thing with it is if other players start dropping bomb cards and someone decides to board wipe, it is risky in that aspect. But I feel there may be some potential in that build tbh.