mtg blue search your library for a card Spellseeker (Foil Etched) [Commander Masters] where X is the number of basic land types among lands you control Manipulate Fate - The List

You can also build around it more

Put that card into your hand if its a land

Second, we have to be aware that milling has a stronger psychological impact than logic would assume

Now I feel like a lot of the acceleration needs to come in the form of actual lands on the battlefield, so cards like Nissa, Vastwood Seer and Shrine of the Forsaken Gods hit their critical seven land point

I really like this card since it will not only generate you a ton of tokens, but will also let you cast the Hideaway card eventually

Being able to split them up is lovely too, you can dig for lands early and then cash in lands with it late