Both Hearth Elemental and Eddymurk Crab get cheaper based on instants and sorceries in the opponent's graveyard, so Soul-Guide Lantern's graveyard exile can meaningfully tax their ability to cheat those threats out early. Extra Spell Pierce punishes their cantrip-heavy, low-curve draws (Opt, Sleight of Hand, Flow State) when they're tight on mana. Terrian, World Tyrant and one Quakestrider Ceratops come out since they're slow, clunky top-end that doesn't interact with a tempo-combo deck trying to go over the top with growing Elementals before we stabilize. Keep Garruk's Uprising and the low curve creatures to pressure them before Sunderflock bounces our board.