tempest_brew_potent.xml

<items>
  <item>
    <key>tempest_brew_potent</key>
    <clone>tempest_brew</clone>
    <name>Tempest Brew (Potent)</name>
    <statusEffects>
      <statusEffects>
        <turns>40</turns>
        <modifiers>
          <modifiers>
            <type>FireResist</type>
            <amount>0.375</amount>
          </modifiers>
          <modifiers>
            <type>FireDamageMultiplier</type>
            <amount>0.075</amount>
          </modifiers>
        </modifiers>
      </statusEffects>
    </statusEffects>
    <priceDetails>
      <buy>180</buy>
      <sell>60</sell>
      <canTrade>true</canTrade>
    </priceDetails>
  </item>
</items>