Golgari wants to grind with Sheoldred, the Apocalypse and removal-heavy sequencing, so cheap efficient removal is more valuable than a Galvanic Iteration that does little against their removal-dense deck. I'm not bringing in Redcap Melee. Only 4 damage doesn't kill Sheoldred, a 4/5, and every permanent Golgari plays is nonred, so each cast would also cost us a land. Abrade is the one bring-in. Its 3 damage kills Graveyard Trespasser, Badgermole Cub, or an animated Mutavault at instant speed, but it won't kill Sheoldred. Keep Into the Flood Maw in, since bouncing Sheoldred or a Demon token buys a turn. Keep Lightning Axe, whose 5 damage is enough to kill Sheoldred, and Fiery Impulse, which kills Badgermole Cub or Graveyard Trespasser (with spell mastery for the 3/3). Lightning Axe's discard cost is easy to pay when Thoughtseize or Duress is stripping the hand anyway. Be mindful of Culling Ritual, which destroys our mana value 2 or less permanents like Artist's Talent and Picklock Prankster.

Temur Indomitable Creativity's entire game plan hinges on resolving Indomitable Creativity itself or huge top-end like Atraxa, Grand Unifier and Valgavoth, Terror Eater, making Disdainful Stroke a premium answer that stops the key spell outright. Brazen Borrower doubles as a flash flyer to race and an Adventure that bounces a problematic Fable of the Mirror-Breaker token or a landed threat before Indomitable Creativity can find it a home. Lightning Axe is awkward since their best bodies (Atraxa, Valgavoth) dwarf 5 damage or are already gone by the time it matters, and discarding a card to a control-ish opponent who out-cards you with Deduce and The Theorist, Jace Beleren is costly. Proft's Eidetic Memory is too slow against their interactive, countermagic-heavy configuration. Keep the full Fiery Impulse and burn suite to pressure their low-toughness creatures like the Goblin tokens from Fable of the Mirror-Breaker.

Selesnya Company's dangerous turns revolve around Collected Company (mana value 4) finding two bodies at instant speed and Elspeth, Storm Slayer (mana value 5) doubling tokens, both of which Disdainful Stroke cleanly answers. Abrade is a versatile answer to Skyclave Apparition or any enchantment-light threat, and can snipe a mana dork to slow their curve. Lightning Axe is less appealing since their cheap efficient threats like Badgermole Cub and Skyclave Apparition aren't the problem — the big payoff spells are — and paying card/life costs to kill small bodies is inefficient. Keep Fiery Impulse in to answer Elvish Mystic, Llanowar Elves, and Thalia, Guardian of Thraben, all of which die to 2 damage.