I know this is late, but I didn't have the time before. I'll play far, no peeking, build first:
1 x Cavalry Pegasus
2 x Deathbellow Raider
1 x Oreskos Sun Guide
1 x Oreskos Swiftclaw
1 x Sigiled Skink
1 x Stonewise Fortifier
1 x Anax and Cymede
1 x Eagle of the Watch
1 x Harvestguard Alseids
1 x Bladetusk Boar
1 x Dawnbringer Charioteers
1 x Celestial Archon
1 x Supply-Line Cranes
1 x Ajani's Presence
1 x Coordinated Assault
1 x Dragon Mantle
1 x Magma Spray
1 x Titan's Strength
1 x Battlewise Valor
1 x Fall of the Hammer
1 x Hall of Triumph
1 x Excoriate
8 x Plains
7 x Mountain
2 x Swamp
Pretty straightforward RW aggro. Great curve, four rares, all of them pretty bomby. So undemanding color-wise I even included two Swamps for the Raider regeneration. You have some nice sideboarding options, Searing Blood, Rollick of Abandon, Thunderous Might, Stormchaser Chimera-well, maybe not that one
Peek time.
So you went WB. White is a definite, but Anax is such a bomb with all the enablers in your pool. RW has almost a draft aggro curve; in Sealed, it should roll over anybody who stumbles even just a little bit. And I would definitely play Hall of Triumph, probably over a Cruel Feeding.