Powerline Musical Superstar is a very cool card for this deck
Theres card draw and pressure, but more importantly, Yshtola works as a powerful value engine once you stack it with auras like Curiosity and Sigil of Sleep
This means Final Fantasy will be entering the same format as cards from other releases that year, like Edge of Eternities, Aetherdrift, and Tarkir Dragonstorm
The last time I stopped playing was in 2014, after spending weeks buying the cards needed to make my green/white Selesnya token generation deck
Azorius Omniscience also features a transformative sideboard plan, capable of swapping out its combo elements for a creature-heavy configuration
This makes it a very useful support and defensive card, assuming you can get your hands on it