Not gonna lie, I had trouble pinning down exactly what this deck is.
I think of it as midrange since it only shines bright after turn 4. I think of it as reanimator since Blood for Bones and Sorin, Vengeful Bloodlord are key to bring out our flying beaters out without paying the mana.
From playtesting I have found out: DO NOT START A GAME WITH LESS THAN 3 LANDS IN HAND. And you should really try to mulligan if neither Kaalia or Supplier are on your starting hand either.
Since we're running some beefy, costly creatures we have 2 main ways of bringing them out- Blood for Bones from the Graveyard or speeding up our acquisition of said cards through Kaalia, Zenith Seeker. I can't seem to find a way to properly focus on one avenue over the other in these colors (the lands were expensive! I'm using them) , especially with rotation right around the corner.
So let's talk combos and strategy...
All I know for sure is that the Sorin, Vengeful Bloodlord + Vilis, Broker of Blood
combos so that, when targeting yourself, Sorin's +2 basically reads "Draw a card" and I think that's just absolutely beautiful.
All but one of our creatures are either angel, dragon, or demon so Kaalia, Zenith Seeker is given a higher chance to give us some value (even though 3 mana for a 3/3 vigilant flyer is pretty great already).
Rix Maadi Reveler is the backbone of the deck since it provides us a way to put our big beaters in the graveyard to resurrect them later and/or draw us some cards when we start running out of fumes.
AND the cheaply priced and well worth the wait Embodiment of Agonies is not just a flyer with deathtouch, he also has the potential to come in as a 10/10. Add that with Sephara, Sky's Blade indestructible and Sorin, Vengeful Bloodlord's lifelink, well you got yourself a nice chump blocker.
Anyways, I don't know what I'm doing since I struggle with anything more than 2 colors so any recommendations are highly appreciated!