You can use creature tokens to help you cast convoke or improvise spells, populate abilities need tokens to function, and you must explicitly sacrifice a token to fulfill the requirement for a bargain spell
This will, of course, have you building a deck with all the best Angels, Demons, and Dragons you can get your hands on cards like: Master of Cruelties Avacyn, Angel of Hope Terror of the Peaks 1 Giada, Font Of Hope Ramp And Power Easily the most consistent and powerful Angel commander you can run is the savior of New Capenna, Giada, Font of Hope
What did Ravensburger and Disney respond to in your portfolio
Are the Unsanctioned Dice-Rolling Cards Legal
Of course, its not without its downsides
Even purchasing extra copies of these for the right price could be a good call