Add a sound when the monster spawns so we can hide

Ele: Į̠͚̱̪̹̻̤̖̝͈̬̰̖͈̟̽͗͋̐͂ͨ̏̓͢҉͏ ̝͔͍͎͕̖͖̓ͤ̓͑l̻̙̣̹͖͚̼͈̺̭̗͖͂ͭ̂͆͗̆ͮ̾ͮ͂҉̶̷͜͢͢͜҉̷̵́͘͘̕͟͝͞o̸̷̵̩͈̱̥̣͕̜̞͒̉͜͡͏͠v̻̙͔̬͉͍̰̱̻̹̯̲͉͖͒̎͋ͣ̅ͦ͂̈ͫ̍̆ͣ̏͌ͤ̅̌ͥͅ͏̴̀́͟͝͡͏̵̴̢̛͜͢͜͡͡e̴͎͕̲̝̒ͦ̀̅͛̈́̇ͦ̃̈ͩ̇͌͑ ̸̢̨̨̛͚̫̪̗ͭͥ̀͘̕͢͝ͅͅ͏y͎̪̞̿ͦͣͯͩͬ̔ͦ̈́̈͠͏̷̷̡̛͘͟͢͟͝͡ǒ̹̼̭̲̦̯͍͙͇̟͔̓ͨ̽́̏̀͢ͅư̶̶̢̡̛͖̪̹͍͛ͩ̑̀͟͠ ̀̏͊ͬͥ͐̊͌ͥ͒͒͗ ̷̣̀̀͜͢͜͢͡͏̷̀͘͘