the_beatdown_2.xml

<abilities>
  <ability>
    <clone>the_beatdown</clone>
    <key>the_beatdown_2</key>
    <description>
      Perform 2 mace attacks, each with -45% damage but ⮃+20% stun chance⮃.
    </description>
    <cooldown>5</cooldown>
    <unlockInfo>
      <autoDiscover>0</autoDiscover>
      <unlockRequirements>
        <requiredPoints>1</requiredPoints>
      </unlockRequirements>
      <replaces>the_beatdown</replaces>
    </unlockInfo>
    <attacks>
      <attacks>
        <count>0</count>
        <animation>spell_smash_03</animation>
        <modifiers>
          <modifiers>
            <type>stunChance</type>
            <amount>0.2</amount>
          </modifiers>
          <modifiers>
            <type>Damage</type>
            <amount>0.0</amount>
            <modifierConversion>
              <type>Calculator</type>
              <calculator>
                the_beatdown_damage_calculator
              </calculator>
            </modifierConversion>
          </modifiers>
        </modifiers>
      </attacks>
      <attacks>
        <count>0</count>
        <animation>spell_smash_03_offset</animation>
        <modifiers>
          <modifiers>
            <type>stunChance</type>
            <amount>0.2</amount>
          </modifiers>
          <modifiers>
            <type>Damage</type>
            <amount>0.0</amount>
            <modifierConversion>
              <type>Calculator</type>
              <calculator>
                the_beatdown_damage_calculator
              </calculator>
            </modifierConversion>
          </modifiers>
        </modifiers>
      </attacks>
    </attacks>
  </ability>
</abilities>