No sideboard cards are available to bring in for this matchup, so the 75 stays the same. Against Mono-Green Eldrazi, Thoughtseize and Orcish Bowmasters help slow down their ramp into Emrakul, the Promised End or Ulamog, the Ceaseless Hunger, and Surgical Extraction can strip a copy of Green Sun's Zenith targets or cards put into the graveyard by Malevolent Rumble from their graveyard. Fatal Push should target Fanatic of Rhonas early to slow their mana acceleration, though Galvanic Discharge needs extra energy to kill its 4 toughness. Race aggressively with Ragavan, Nimble Pilferer and Voice of Victory since this deck is a ramp strategy that struggles against a fast, disruptive start.
No sideboard cards are available to bring in for this matchup, so the 75 stays the same. Against Boros Energy this is a mirror-adjacent matchup, so sequence Thoughtseize to strip their own Wrath of the Skies or Solitude before committing your board. Galvanic Discharge should be saved to answer their Solitude or a key creature rather than spent early, whereas Fatal Push cannot destroy Solitude due to its mana value of 5, and Static Prison is strong against The Legend of Roku or a resolved planeswalker-like threat. Play around Path to Exile and Solitude when attacking with Ragavan, Nimble Pilferer, and try to out-value them with Ajani, Nacatl Pariah's token generation since they also have access to Wrath of the Skies as a sweeper.
No sideboard cards are available to bring in for this matchup, so the 75 stays the same. Against Affinity, Wear // Tear and Meltdown are your best mainboard tools, with Meltdown able to wipe out cheap artifacts like Mishra's Bauble, Mox Opal, and Welding Jar for a low X cost. Thraben Charm can also destroy an enchantment like Weapons Manufacturing. Prioritize killing Kappa Cannoneer with Galvanic Discharge before it grows out of range, and race with Ragavan, Nimble Pilferer and Ocelot Pride since Affinity often lacks direct interaction for your creatures.