Bukkit

#Sample config for v2.1
world:
  zombie:
    chance: 50 #In percentage
    criticalhit:
      amount: 4 #In this case: Full hearts
      message: You were strongly hurt by an Zombie! Look after your sore! #Not necessary. Could be left off (Example: Hunger)
    hunger:
      duration: 20 #In seconds
  spider:
    chance: 60
    confusion:
      duration: 20
      message: You were bitten by a spider! The poison starts to work!
  skeleton: 
    chance: 50
    blindness:
      duration: 10
      message: You have got an arrow in your eye! Remove it as quickly as possible!
worldnether:
  magmacube:
    chance: 30
    burn:
      duration: 5 #In seconds. Be careful with that! 
      message: You were set on fire by a magma cube!