undead_lich_green.xml

<monsters>
  <monster>
    <clone>undead_lich</clone>
    <name>Lich</name>
    <key>undead_lich_green</key>
    <zoomImage>undead_lich_green</zoomImage>
    <abilities>lich_summon_green, drain_bolt</abilities>
  </monster>
</monsters>