flame_aura4.xml

<statusEffects>
  <statusEffect>
    <turns>16</turns>
    <key>flame_aura4</key>
    <clone>flame_aura</clone>
    <modifiers>
      <modifiers>
        <type>PhysicalResist</type>
        <amount>0.0</amount>
        <modifierConversion>
          <type>Flag</type>
          <flag>flame_aura_fire_count</flag>
          <multiplier>0.09</multiplier>
        </modifierConversion>
      </modifiers>
      <modifiers>
        <type>FireResist</type>
        <amount>0.0</amount>
        <modifierConversion>
          <type>Flag</type>
          <flag>flame_aura_fire_count</flag>
          <multiplier>0.13</multiplier>
        </modifierConversion>
      </modifiers>
    </modifiers>
  </statusEffect>
</statusEffects>