This might seem intuitive, but it's important to be able to answer the threats that immediately kill you, like Colossus Hammer or Murktide Regent, rather than the ones that are mostly just annoying
Ever since I saw High Alert previewed, I knew there had to be a walls deck somewhere in Standard, since the enchantment added a second enabler to assist Arcades, the Strategist in its duties of turning all of your walls into attacking, defending, card-drawing engines
To set it up I utilised a combination of Hickory and Mark to search for the 2 LV2 blends out I needed, Usher for more gems, Pixel for shuffling blends back into my deck (an old effect) and Data Cipher
And fortunately they hit it out of the park with this incarnation of the doctor, who probably the most interesting of the deck's Doctor options