Elves' key mana dorks (Llanowar Elves, Elvish Mystic, Fyndhorn Elves) are all 1/1s, so Fiery Confluence's 1-damage-to-each-creature mode can wipe their entire mana base of dorks in one sweep. Trinisphere and Chalice of the Void are less impactful since many of their key one-drops and engine pieces aren't what they're trying to protect through countermagic, and Gaea's Cradle scales regardless of tax. Unlicensed Hearse comes in mainly as a blocker body since Elves has minimal graveyard reliance, though it can still strip a stray Stitcher-style card if present. Keep Blood Moon and Magus of the Moon in, since shutting off Gaea's Cradle and Bayou is devastating to their manabase.