dreadful_impact.xml

<abilities>
  <ability>
    <name>Dreadful Impact</name>
    <key>dreadful_impact</key>
    <skill>Axes</skill>
    <icon>dreadful_impact</icon>
    <tagline>"The impact shook not just their bodies, but their souls."</tagline>
    <description>
      Tiles targeted by Terrifying Cleave are marked as a "Dread Zone" for the next 8 turns.
      [p]Enemies standing on a dread zone take 2% of their current health as true damage at the start of their
      turn, and have -20 accuracy.
    </description>
    <type>upgrade</type>
    <unlockInfo>
      <autoDiscover>0</autoDiscover>
      <unlockRequirements>
        <requiredLevel>0</requiredLevel>
        <requiredPoints>2</requiredPoints>
        <requires>terrifying_cleave</requires>
      </unlockRequirements>
    </unlockInfo>
  </ability>
</abilities>