piercing_arrows.xml

<abilities>
  <ability>
    <isSkillBonus>true</isSkillBonus>
    <name>Piercing Arrows</name>
    <key>piercing_arrows</key>
    <skill>archery</skill>
    <icon>archery_19</icon>
    <description>
      For each level of Archery gain:
      [p]+1% damage with bows.
      [p]+1 archery mastery, enabling you to wield higher-level bows effectively.
      [p]Your archery mastery: {{stat -> key:ArcheryWeaponMastery, showDescription:false, showPlus:false}}
    </description>
    <type>passive</type>
    <subType>0_Basic Passives</subType>
    <passiveInfo>
      <modifiers>
        <modifiers>
          <type>Damage</type>
          <amount>0.01</amount>
          <multiplier>archery</multiplier>
          <requirements>
            <requirements>
              <type>Weapon</type>
              <params>
                <params type="weapon">Bow</params>
              </params>
            </requirements>
          </requirements>
        </modifiers>
        <modifiers>
          <type>ArcheryWeaponMastery</type>
          <amount>1.0</amount>
          <multiplier>archery</multiplier>
        </modifiers>
      </modifiers>
    </passiveInfo>
    <unlockInfo>
      <autoUnlock>0</autoUnlock>
      <autoDiscover>-1</autoDiscover>
      <unlockRequirements>
        <requiredLevel>0</requiredLevel>
        <requiredPoints>0</requiredPoints>
      </unlockRequirements>
    </unlockInfo>
  </ability>
</abilities>