Consign to Memory counters Solitude's enter trigger and their Isochron Scepter spell, since Scepter is colorless. It can't touch Scepter's activated ability once the artifact is in play. At one mana it also slips past their Spell Snare. Spell Snare is weak here because it only hits their 2-mana spells (Consult the Star Charts, Sink into Stupor, Isochron Scepter) and misses Teferi, Narset, Solitude and the sweepers, so it comes out. Quantum Riddler comes out because Narset caps us at one draw per turn, which blunts Riddler's extra draws, and Teferi can bounce it. Trimming it for more cheap interaction lets us play a lower, more efficient curve to fight through their control elements. Dress Down is a flash cantrip that replaces itself, and while it's out it strips the abilities from creatures like Solitude. It does nothing to Teferi or Narset, since they are planeswalkers. Keep Force of Negation in to fight their noncreature spells, including their planeswalkers.