Mainboard (60)
Creatures (24)
Instants (5)
Sorceries (3)
Artifacts (2)
Enchantments (8)
Boros Energy is a fast, aggressive deck that generates significant value through Ragavan, Guide of Souls, and Ocelot Pride's token generation, so your primary goal is to land a large Cragganwick Cremator or Yargle and Multani threat before they stabilize. Blood Moon is already live in your mainboard and punishes their fetchland-heavy mana base, so the redundant Magus of the Moon is less necessary here. Magebane Lizard and Hexing Squelcher come in as disruptive creatures that pressure their tempo and punish the spell-heavy Energy gameplan. Vexing Bauble and Traverse the Ulvenwald are trimmed as lower-impact utility cards when you need to be attacking on the axis of large threats and disruption. Watch out for their sideboard Wrath of the Skies and Obsidian Charmaw, the latter of which can hit your Blood Moon — hold up Ignoble Hierarch mana to ensure you can deploy threats at instant-speed-friendly timing.
Jeskai Blink wins through Phelia and Ragavan generating incremental value while Solitude and Galvanic Discharge answer your threats efficiently, so the matchup is about landing a Yargle and Multani or Cragganwick Cremator through their interaction before they stabilize. Blood Moon is excellent here, cutting off Hallowed Fountain and Steam Vents and making Prismatic Ending and Consign to Memory harder to cast. Hexing Squelcher disrupts their blink synergies by punishing spell casts, while Magebane Lizard taxes Solitude and other pitch spells that they rely on to tempo you out. Vexing Bauble comes in to further tax their interaction suite, making it harder for them to cleanly answer your threats while also developing their own board. Trim the singleton hate pieces and Formidable Speaker, which is too slow and fragile against their removal-heavy configuration.
Affinity is a fast artifact-based combo deck that leans on Urza's Saga to assemble threats and Kappa Cannoneer to close quickly, so your priority is disrupting their artifact base before they go wide. Force of Vigor and Shattering Spree are your best tools for blowing up Mox Opals, Welding Jars, and Engineered Explosives that would otherwise protect their board. Collector Ouphe shuts off Mox Opal, Mishra's Bauble, and Welding Jar simultaneously, and your large creatures can race over anything Ouphe doesn't lock down. Blood Moon is largely dead here since they run very few basics, so trimming Magus of the Moon and the less impactful utility cards like Traverse and The Underworld Cookbook keeps your threat density high. Yargle and Multani and Cragganwick Cremator are your finishers — land either quickly and your opponent will have little time to stabilize through your artifact disruption.