Aura of Silence taxes their artifact and enchantment spells by {2} each, which hits Opalescence, Parallax Wave, and Decree of Silence and slows their combo assembly. Their Replenish is a sorcery, so it is not taxed. Aura's sacrifice ability can also destroy a resolved Opalescence or Parallax Wave. Karmic Justice punishes them for using Seal of Cleansing on our noncreature permanents, letting us destroy a key piece of theirs like Parallax Wave or Opalescence in return. We cut our own Opalescence and Parallax Wave since mirroring their combo pieces is unnecessary when we can instead disrupt theirs directly; our own Seal of Cleansing already gives us some built-in interaction against the enchantments their Replenish returns.