Afterlife Insurance can be cast for white mana, but thanks to Rainbows color identity, I can still play it in the deck even though its technically white and black
This is achieved even more as the background colors in this card, similar to Mickey's enchanted card, are muted behind him in tones of gray
Lets try that again
It may seem like a niche strategy initially, but it's quite solid once you have your mill commander in play and multiple of these creatures already on the table
It would be easy enough to add other ways to gain life in a Boros deck too, cards like Soul Warden, Suture Priest, or even Angelic Chorus
While this wont win you the game on its own like Twisted Fealty, it can allow you to fill your hand with all the pieces you need to pull off a win afterward