breakthrough_2.xml

<abilities>
  <ability>
    <clone>breakthrough</clone>
    <key>breakthrough_2</key>
    <unlockInfo>
      <autoDiscover>0</autoDiscover>
      <unlockRequirements>
        <requiredPoints>1</requiredPoints>
        <requirements>
          <requirements>
            <type>UnknownEnchantment</type>
            <params>
              <params type="type">standard</params>
            </params>
          </requirements>
        </requirements>
      </unlockRequirements>
      <replaces>breakthrough</replaces>
      <unlockEffects>
        <unlockEffects>
          THEN LearnEnchantment -> type:standard;
        </unlockEffects>
      </unlockEffects>
    </unlockInfo>
  </ability>
</abilities>