Azorius Blink's most dangerous disruption pieces are Teferi, Time Raveler (which shuts off instant-speed Violent Outburst entirely), Consign to Memory (which counters Living End off the cascade chain), and post-board Boromir, Warden of the Tower (which prevents cascade from functioning at all). Keep your remaining Force of Negation open to protect Living End from Consign to Memory, and use Mystical Dispute to answer Teferi, Boromir, or additional copies of Consign to Memory cheaply given how blue-heavy their shell is. Dismember answers Boromir before you attempt to go off, and Brazen Borrower's Petty Theft adventure can bounce Teferi or a post-board Deafening Silence at instant speed to re-enable cascade on the same turn. Trim the high-cost one-of cyclers and Sink into Stupor, which are sorcery-speed and contribute little in a tempo race where resolving Living End cleanly is the only priority.