Cards like Insidious Dreams will allow you to put the exact cards you want on top of your deck, so when Belzenlok is cast, you can get them all into your hand
Its a fog on steroids, basically, and one thats an intriguing option
6 Sothera, the Supervoid (Singularity Foil) $1,480.32 Sothera brings Magic back to its core fantasy roots but refracted through a cosmic lens
To figure out how rare each card is, we've put together a little guide on Booster Pack openings that compiles all the pull data into useful tables
Assuming no one will pay two to stop you, you will be getting at least three mana per round
As far as black draw goes, this is pretty light on inconvenience and may form some potent combos in commander