So um problema, esse script ela tem corpse de banshee, porem vc fez quando era 8.4, a medusa nova ficou assim:
<?xml version="1.0" encoding="UTF-8"?>
<monster name="Medusa" nameDescription="a medusa" race="blood" experience="4050" speed="200" manacost="0">
<health now="4500" max="4500"/>
<look type="330" head="20" body="30" legs="40" feet="50" corpse="10525"/>
<targetchange interval="5000" chance="8"/>
<strategy attack="100" defense="0"/>
<flags>
<flag summonable="0"/>
<flag attackable="1"/>
<flag hostile="1"/>
<flag illusionable="1"/>
<flag convinceable="0"/>
<flag pushable="0"/>
<flag canpushitems="1"/>
<flag canpushcreatures="1"/>
<flag targetdistance="1"/>
<flag staticattack="90"/>
<flag runonhealth="900"/>
</flags>
<attacks>
<attack name="melee" interval="2000" min="-300" max="-350"/>
<attack name="speed" interval="1000" chance="17" range="7" radius="4" target="1" speedchange="-600" duration="15000">
<attribute key="shootEffect" value="poison"/>
<attribute key="areaEffect" value="greenbubble"/>
</attack>
<attack name="physical" interval="3000" chance="17" length="8" spread="3" min="-550" max="-750">
<attribute key="areaEffect" value="bluebubble"/>
</attack>
<attack name="poison" interval="2000" chance="20" length="8" spread="3" min="-60" max="-300">
<attribute key="areaEffect" value="poison"/>
</attack>
<attack name="terra wave" interval="1000" chance="20" length="8" spread="3" min="-500" max="-900">
<attribute key="areaEffect" value="poison"/>
</attack>
<attack name="wrath of nature" interval="1000" chance="20" length="8" spread="3" min="-600" max="-1000">
<attribute key="areaEffect" value="poison"/>
</attack>
</attacks>
<defenses armor="25" defense="35">
<defense name="healing" interval="1000" chance="25" min="500" max="900">
<attribute key="areaEffect" value="blueshimmer"/>
</defense>
</defenses>
<elements>
<element earthPercent="100"/>
<element icePercent="40"/>
<element holyPercent="25"/>
<element physicalPercent="-15"/>
<element energyPercent="-10"/>
</elements>
<immunities>
<immunity lifedrain="1"/>
<immunity paralyze="1"/>
<immunity invisible="1"/>
</immunities>
<voices interval="5000" chance="10">
<voice sentence="You will make sssuch a fine ssstatue!" yell="1"/>
<voice sentence="There isss no chhhanccce of essscape" yell="1"/>
<voice sentence="Are you tired or why are you moving thhat ssslow" yell="1"/>
</voices>
<loot>
<item id="2148" countmax="100" chance1="100000" chancemax="0"/>
<item id="2148" countmax="80" chance1="100000" chancemax="0"/>
<item id="2671" countmax="3" chance="60000"/>
<item id="7590" countmax="2" chance="60000"/>
<item id="2476" chance="30000"/>
<item id="2536" chance="10000"/>
<item id="3976" countmax="10" chance1="50000" chancemax="0"/>
<item id="2149" countmax="3" chance="5000"/>
<item id="2004" chance="100000">
<inside>
<item id="2152" countmax="2" chance="50000"/>
<item id="9808" chance="400"/>
<item id="7887" chance="2000"/>
<item id="7885" chance="1000"/>
<item id="7884" chance="1000"/>
<item id="7413" chance="1000"/>
<item id="8473" countmax="2" chance1="50000" chancemax="0"/>
<item id="2143" countmax="2" chance1="50000" chancemax="0"/>
</inside>
</item>
</loot>
</monster>