wolfs_hunger.xml

<abilities>
  <ability>
    <isSkillBonus>true</isSkillBonus>
    <name>Wolf's Hunger</name>
    <key>wolfs_hunger</key>
    <skill>dreadheart</skill>
    <icon>wolfs_hunger</icon>
    <description>
      For each level of Dreadheart, gain an additional +0.5% life steal when your health is below 50%.
    </description>
    <type>passive</type>
    <subType>0_Basic Passives</subType>
    <passiveInfo>
      <modifiers>
        <modifiers>
          <type>LifeSteal</type>
          <amount>0.005</amount>
          <multiplier>dreadheart</multiplier>
        </modifiers>
      </modifiers>
    </passiveInfo>
    <unlockInfo>
      <autoUnlock>0</autoUnlock>
    </unlockInfo>
    <requirements>
      <requirements>
        <type>Weapon</type>
        <params>
          <params type="weapon">Melee</params>
        </params>
      </requirements>
      <requirements>
        <type>lost_health</type>
        <params>
          <params type="percent">0.5</params>
        </params>
      </requirements>
    </requirements>
  </ability>
</abilities>