Regex Challenge 2: Escape the Cthulhu

Ph'Nahxys, a mad cultist, has unleashed Cthulhu, the Great Old One, upon the world. Your mission, should you choose to accept it, is to escape the Cthulhu's grasp using the power of regex.

You are trapped in a maze of twisty, turny, regex-filled corridors. The Cthulhu's minions are closing in. You must find the exit before they do.

Use regex to navigate the following passages:

    
      /devil/fish|cat|dog|elephant/ 
      ^Cthulhu.*?ph'Nahxys$
      (?:ph'Nahxys|Cthulhu).*?sacrifice

What regex pattern will you use to:

  1. Match the Cthulhu's minions (cat, dog, elephant, fish, or devil)?
  2. Find the phrase "Ph'Nahxys" in the Cthulhu's speech?
  3. Escape the sacrifice ritual?

Need help?