Golgari grinds with Thoughtseize, Fatal Push, Abrupt Decay and Sheoldred punishing our draws, so resilient threats beat fragile combat tricks here. Magebane Lizard punishes their cheap noncreature spells like Thoughtseize, Fatal Push and Abrupt Decay, and its 4 toughness makes it awkward for them to deal with. Scorching Shot comes in because its 5 damage cleanly answers Sheoldred, which Burst Lightning cannot do. Monstrous Rage dies poorly to their abundant cheap removal before trample matters, and two Burst Lightning are cut since they can't efficiently answer Sheoldred or the Unholy Annex Demon token. Keep Reckless Rage in as efficient removal for their other creatures like Graveyard Trespasser, Sentinel of the Nameless City and Badgermole Cub, though its 4 damage won't kill Sheoldred. Sunspine Lynx punishes their nonbasic-heavy manabase and stops their life gain from Sheoldred and Professor Dellian Fel.

Izzet Cauldron leans on big, late-game creatures like Sunderflock, Hearth Elemental, and Eddymurk Crab plus a dense cantrip suite, so cheap removal for our own small threats matters less than answers that actually kill a 4/5 or 5/5. Scorching Shot deals 5 damage and cleanly kills Sunderflock, Eddymurk Crab, or Hearth Elemental. Magebane Lizard is a 1/4 that punishes every cantrip and noncreature spell they cast (Consider, Opt, Sleight of Hand, and more). It also survives Fiery Impulse and Prismari Charm's 1 damage. Monstrous Rage is a worse rate here since Fiery Impulse and Get Out punish committing to our own creatures, and Kumano Faces Kakkazan is slow against a deck full of cheap interaction and card selection. Burst Lightning stays in as flexible reach to the face and to finish off damaged creatures. Reckless Rage's 4 damage won't kill any of their big creatures on its own, so be careful about spending it.

This UBR pile is full of cheap instants and sorceries (Fiery Impulse, Deduce, Make Disappear) plus Indomitable Creativity as a big swing, so Magebane Lizard punishes their spell-dense turns hard. Scorching Shot answers their bigger threats like Raph & Mikey, Atraxa, or Valgavoth that our burn otherwise struggles against, and it's also useful against the Fable token. Monstrous Rage is weak since Make Disappear and cheap removal eat our creature before trample matters, and Kumano Faces Kakkazan's slow clock is less valuable against a deck that can out-card-advantage us with Deduce and Fable loops. Keep Burst Lightning and Reckless Rage in to pressure their low life totals and answer Fable's Goblin token or Jace planeswalker-adjacent threats.