Mainboard (60)
Creatures (13)
Instants (7)
Sorceries (4)
Artifacts (5)
Enchantments (4)
Planeswalkers (5)
Boros Energy floods the board with efficient creatures like Ocelot Pride and Guide of Souls that generate incremental value through energy and tokens. Post-board, Kozilek's Return is excellent as a sweeper that can be triggered from exile off your Eldrazi casts, and Fade from History handles Goblin Bombardment and any artifact-based energy payoffs. Keep all your removal and focus on surviving to the mid-game where your Eldrazi go well over the top of their threats. Unholy Heat is at its best here picking off Ragavan and Ocelot Pride early.
Jeskai Blink grinds hard with Solitude, Ephemerate, and Phelia generating repeated ETB value, while Obsidian Charmaw out of the sideboard threatens your special lands. Focus on ramping past their interaction and landing Emrakul or Ugin to invalidate their value engine. Fade from History is strong here as a reset against their board development, and Nature's Claim handles problematic permanents. Trim some Unholy Heat since their key threats like Solitude and Quantum Riddler are difficult to efficiently remove with damage-based spells.
Affinity presents a fast artifact-based board with Kappa Cannoneer and Pinnacle Emissary as resilient threats, backed by Urza's Saga for toolbox utility. Fade from History is a blowout that destroys their entire board of artifacts and enchantments in one shot. Nature's Claim gives you an efficient early answer to Mox Opal or Weapons Manufacturing. Pithing Needle can name Urza's Saga to prevent them from generating Constructs and tutoring.