chain_lightning_4.xml

<abilities>
  <ability>
    <clone>chain_lightning</clone>
    <key>chain_lightning_4</key>
    <description>
      Unleash a surge of thunder that strikes a primary target up to 6 tiles away for ⮃19 thunder damage⮃,
      then
      arcs to up to 2 nearby enemies within 4 tiles, continuing to arc as long as there are valid targets.
      [p]Each arc deals ⮃75% of the previous damage⮃. A target can only be struck once.
    </description>
    <cooldown>13</cooldown>
    <unlockInfo>
      <autoDiscover>0</autoDiscover>
      <unlockRequirements>
        <requiredPoints>1</requiredPoints>
      </unlockRequirements>
      <replaces>chain_lightning_3</replaces>
    </unlockInfo>
    <attacks>
      <attacks>
        <count>0</count>
        <specialModifiers>
          <specialModifiers>
            <type>EffectsOnly</type>
            <amount>0</amount>
          </specialModifiers>
          <specialModifiers>
            <type>NoSlide</type>
            <amount>0</amount>
          </specialModifiers>
          <specialModifiers>
            <type>IsMagic</type>
            <amount>0</amount>
          </specialModifiers>
        </specialModifiers>
        <targetEffects>
          <targetEffects>
            THEN ChainLightning -> initialDamage:19, arcCount:2, arcRange:4, damageDecay:0.75,
            animation:chain_lightning, sound:lightning_spell_08;
          </targetEffects>
        </targetEffects>
      </attacks>
    </attacks>
  </ability>
</abilities>