you're very close to having a very solid build
We'll answer all this and more by looking at the current prices on all top marketplaces: TCGPlayer, Cardmarket, and Ebay
On top of that, you are going to run into situations where Calling in Favors is a dead draw, such as when you haven't got an ally out yet, or when you already have your best allies out and don't want to replace them
Most importantly, do not get intoxicated or high af before working with your cards
Ascended Heroes & Phantasmal Flames ETB Popular for both competitive and collector audiences
Plus, its almost free to add to a deck that requires key threats to be protected from spot removal, so your commander gets harder to kill if you have a few untapped creatures laying around