dual_impact.xml

<abilities>
  <ability>
    <name>Dual Impact</name>
    <key>dual_impact</key>
    <skill>Swords</skill>
    <icon>duel_impact</icon>
    <tagline>"Only fools share a shadow."</tagline>
    <description>
      If Piercing Skewer hits more than one target, deal an additional 10 true damage and increase Immobilize duration by 1 turn.
    </description>
    <type>Upgrade</type>
    <unlockInfo>
      <autoDiscover>0</autoDiscover>
      <unlockRequirements>
        <requiredPoints>2</requiredPoints>
        <requires>piercing_skewer</requires>
      </unlockRequirements>
    </unlockInfo>
  </ability>
</abilities>