Dimir Tempo leans on cheap plays and triggered abilities like Orcish Bowmasters, plus colorless Mishra's Bauble, so Consign to Memory is a cheap, efficient answer to those. It can counter a Bowmasters trigger or a Bauble for just {U}, and it can be replicated for extra copies if needed. The extra The One Ring gives us another resilient card-advantage engine that is indestructible and so dodges their Fatal Push, and it gives us protection from everything for a turn when cast. Thoughtseize can still take it from our hand, so it is best deployed when we can resolve it. Tormod's Crypt shrinks their graveyard-dependent threats like Nethergoyf and stops its escape, and also hampers Barrowgoyf if they bring it in. Eldrazi Confluence is a clunky four-mana instant against a deck full of cheap, efficient disruption, and Sink into Stupor's bounce trades poorly against cheap threats that are easy to recast, so both are trimmed for better interaction.