http://mcmonkey.org/hasteSpawn Guard: 
  type: assignment
  interact scripts:
  - 100 spawnwipe
spawnwipe:
  type: interact 
  steps:
    'Just Sayin Shit': 
      click trigger:
        script:  
        - narrate 'Calls the guards to clear the mobs!'  
        - foreach <player.location.find.entities.within[15]> {  
          - if <%value%.is_mob>  
              chat 'Removing %value%'
              remove %value%  
            }