Mono-Blue Terror is a tempo deck that wins by countering your spells and attacking with cheap, efficient threats like Delver of Secrets and Tolarian Terror. Your lifegain from Armadillo Cloak and Sacred Cat is largely irrelevant here since the opponent races through the air before your ground presence matters. Bring in Flaring Pain to punch through Hydroblast and Blue Elemental Blast blowouts on your key enchantments, particularly Armadillo Cloak. Trim one Prismatic Strands since the opponent has very few creatures and the spell is often a dead card without fog targets to protect. Focus on resolving Basilisk Gate or Armadillo Cloak on Guardian of the Guildpact, which cannot be targeted by Deem Inferior or Sleep of the Dead and is your most reliable path to closing the game.