Devoted Combo wants to chain Devoted Druid with Vizier of Remedies for infinite mana, then dump it through Green Sun's Zenith or Nature's Rhythm into a lethal Craterhoof Behemoth or Agatha's Soul Cauldron payoff. Trinisphere raises the cost of their one- and two-mana pieces (Delighted Halfling, Devoted Druid, Green Sun's Zenith) to three, badly disrupting their ability to combo off early. Pithing Needle can name Devoted Druid to stop the untap ability that powers the infinite mana loop outright. We bring in Grafdigger's Cage mainly to blunt Green Sun's Zenith's library search for creatures and any recursive creature plans, while cutting our own grindy pieces (Blade, Devourer of Destiny, Sire of Seven Deaths) that don't help us race or disrupt their faster combo plan.