enchant_scroll_stunning.xml

<items>
  <item>
    <key>enchant_scroll_stunning</key>
    <name>Scroll of Enchanting: Stunning</name>
    <description>
      Read to consume the scroll and learn this enchantment.
    </description>
    <type>enchanting_scroll</type>
    <weight>0.2</weight>
    <effects>
      <effects>ReadEnchantingScroll -> Item:enchant_scroll_stunning, Enchantment:stun_chance;</effects>
    </effects>
    <priceDetails>
      <buy>500</buy>
    </priceDetails>
  </item>
</items>