Thraben Charm's destroy-target-enchantment mode is the best answer here since it targets the aura itself (Rancor, Ethereal Armor, Armadillo Cloak, Ancestral Mask) rather than the hexproof creature wearing it, so bring in the second copy. Prohibit stays in at full count since Rancor and Ethereal Armor cost 1 and get countered unkicked, while kicked Prohibit also catches Ancestral Mask and Armadillo Cloak at mana value 3. The extra Negate counters their auras outright, and Stonehorn Dignitary, looped with Ephemerate's rebound and Ghostly Flicker, skips combat against their trampling threats while answers are assembled. Cut the slow Meeting of Minds and one Sea Gate Oracle for these more impactful interactive pieces, keeping Ghostly Flicker to recur Stonehorn Dignitary.