<event>
  <outcome affected_mobs="zombie">
    <action_group>
      <actions>
        <set_max_life>100</set_max_life>
        <set_hp>100</set_hp>
        <set_attack_power>7</set_attack_power>
      </actions>
    </action_group>
  </outcome>
  <outcome affected_mobs="skeleton">
    <action_group>
      <actions>
        <set_hp>30 to 40</set_hp>
        <set_attack_power>6</set_attack_power>
      </actions>
    </action_group>
  </outcome>
  <outcome affected_mobs="creeper">
    <action_group>
      <actions>
        <set_hp>25 to 30</set_hp>
      </actions>
    </action_group>
  </outcome>
  <outcome affected_mobs="cavespider">
    <action_group>
      <actions>
        <set_hp>20 to 30</set_hp>
      </actions>
    </action_group>
  </outcome>
  <outcome affected_mobs="spider">
    <action_group>
      <actions>
        <set_hp>20 to 30</set_hp>
        <set_attack_power>5</set_attack_power>
      </actions>
    </action_group>
  </outcome>
</event>