Ive heard comments that the deck is too tight of a package to really evolve much, but I hope this has given you some idea of how many different ways there are to approach these kinds of synergies, where this deck can safely be tweaked, and whats really important
As previously mentioned, mono-blue and mono-red have virtually zero cards which gain life (in the case of red, actually zero)
Teferi, Mage of Zhalfir I like to think about Teferi, Mage of Zhalfir as Michael Jordan, as it can basically do everything despite being a simple creature
And at its worst, Shredders Technique is extra redundancy for a black deck that otherwise couldnt hit enchantments
Traits of Good Flicker Commanders A commander that delivers a good flicker payoff is going to have a lot in common with a commander focused on enabling flicker-based shenanigans
Not great but lifegain is a good counter to burn decks