KEY CARDS & INTERACTIONS:
Civic Saber: Every single one of our creatures save for the tokens are 2-colored, so this turns effectively into Bonesplitter. For those of you who don't have experience with the card, let's put it simple: as long as you have creatures to equip, it is a "2/0 with Haste for 1".
Judge's Familiar: Dropping this T1 puts us a step ahead. It's a Cursecatcher with flying that can start swinging for 3 through the air as soon as T2 if we drop and equip Saber there.
Lyev Skyknight: Another tempo swing, this evasive beater drops, delays the opponent and starts swinging for 3 (5 with Saber) through the air.
Advent of the Wurm: Our bombiest card. It would be optimal to run 3, but for budget reasons they're only 2.
Selesnya Charm: It's removal. It's a flash-2drop. It's a combat trick that can kill a dude. It's endgame reach. What more can we ask?
Centaur Healer, Azorius Charm, Horizon Chimera: Our sources of lifegain. Both Centaur and Chimera are solid creatures on their own and both can carry saber to fasten the opponent's clock. Charm is a beast tempo play, lifegain, and cycles, all in 1.
Hussar Patrol: Has low power, but with high toughness and vigilance he can play an offensive and defensive role at the same time. If equipped with Saber, he becomes a must answer threat.
Opportunity: Same as UWR control. It's our Revelation substitute.
Aetherize: Backbreaking tempo play. "Wraths" their side and lets us swing for those final points.
Azorius Charm / Aetherize + Essence Scatter: Huge tempo swing. We negate them a draw / return all of their board and counter their more problematic creature
Horizon Chimera + Opportunity: Sphinx's Rev on a 3/2 flying trample beatstick. If we cast opportunity with Chimera Out, it's a Revelation where X=4, but for W less.

Non-budget options: Third Advent of the Wurm, and some number of Boon Satyr. Loxodon Smiter, real Sphinx's Revelation and shocklands.