Sheoldred's Edict is clean, non-targeted removal for Murktide Regent, a transformed Tamiyo, or Phelia, Exuberant Shepherd, sidestepping their Swords to Plowshares and Force of Will mana investment since it doesn't care about size or protection. Elvish Reclaimer is too slow against a deck full of free countermagic and efficient card advantage engines like Up the Beanstalk. We keep the rest of our disruptive core intact, since Thoughtseize and Wasteland are already well-positioned to strip their hand and punish their nonbasic-heavy control manabase before Leyline Binding or Force of Will comes online.