BRG shares the Jund Sacrifice shell built around Obsessive Pursuit, Fanatical Offering, and sacrifice synergies, so Duress takes away their key enablers before they build a board. Strategic Betrayal exiles both a creature and their graveyard, cutting off recursive value from Fanatical Offering and denying any graveyard-based recovery. Requiting Hex is too narrow against their bigger threats like Rottenmouth Viper and Mutagen Man, so we trim it along with the slower Practiced Offense for more proactive disruption.

Izzet Spellementals chains cheap cantrips (Opt, Sleight of Hand, Flow State) into Hearth Elemental and Eddymurk Crab, so Magebane Lizard punishes every noncreature spell they cast with escalating damage, quickly becoming lethal against a deck that fires off 3+ spells a turn. Duress strips their key interaction or a Prismari Charm before they can protect their engine. Requiting Hex only hits mana value 2 or less, missing Hearth Elemental and Eddymurk Crab entirely, and Practiced Offense is too slow against their tempo plan, so both come out.

Mono-Green Landfall wants to ramp into oversized threats like Mossborn Hydra and Mightform Harmonizer while chaining noncreature spells like Glimpse the Core and Earthbender Ascension, so Magebane Lizard's 1/4 body blocks early Llanowar Elves and punishes their noncreature spell density. Voice of Victory's mobilize tokens help race their bigger creatures and its static ability shuts off their instant-speed tricks like Snakeskin Veil during your turn. Requiting Hex only hits mana value 2 or less, missing most of their real threats, so we cut it and the single Erode (which just ramps them a free land) for more proactive bodies.