Dimir Tempo pressures with cheap threats like Moonshadow, Nethergoyf, and Orcish Bowmasters, backed by Force of Will and Daze. Dismember answers these threats efficiently, and it is castable off colorless mana by paying life for its Phyrexian mana. Disruptor Flute naming Force of Will or Daze makes those counters cost {3} more even when cast for their alternative costs, so they struggle to protect their clock while we assemble Tron and The One Ring. Defense Grid stays in: any counterspell or flash spell they cast on our turn costs {3} more, including Force of Will and Daze cast for their alternative costs, which makes it a real tax on their interaction. Pithing Needle is narrow here, Expedition Map and Karakas are low-impact, and Mystic Forge is a slow four-drop, so all four make room for the more impactful disruption. Keep leaning on Urza's Saga, Ancient Tomb, and Karn to grind past their Wasteland disruption.