Wizards of the Coast
Wizards of the Coast have revealed new split cards and other spoilers for Magic: The Gathering's next set Ravnica Allegiance. There are split cards for Orzhov (black/ white), Rakdos (black/red), Gruul (red/green), Simic (green/blue), and Azorius (blue/white). They also revealed a good amount of flying creatures and the Azorius Guildmage. It looks like Blue/White draft archetype will be focused on having flying creatures on the field and some control elements to back it up.
Check out the Ravnica Allegiance cards revealed today:
Revival // Revenge
Thrash // Threat
Warrant // Warden
Target creature gets +3/-3 until the end of turn
Destroy target nonbasic land. ~deals 2 damage to target opponent or Planeswalker
Other flying creatures you control with flying get +0/+1
Other flying creatures you control get +1/+0
Angel of Grace
Pre-release events for Ravnica Allegiance will take place on January 19, 2019; the set will officially be released on January 25.