Question: why did uryu lose his powers?
Answer: First Uryu lost his powers using Lezt Stil the Quincy Final Form. ... Or Urahara created the sword to give Ichigo his powers back based on the Quincy tech to restore Quincy pwrs after losing them to Lezt Stil bcuz he already knew about Ichigo's heritage and FGT is basically the Shinigami version of Letz Stil.