giant_slayer.xml

<statusEffects>
  <statusEffect>
    <turns>3</turns>
    <name>Giant Slayer</name>
    <key>giant_slayer</key>
    <icon>icon_giant_slayer_status</icon>
    <allowMany>false</allowMany>
    <skipFirstTurn>true</skipFirstTurn>
    <description>
      Giants fear your presence.
    </description>
    <modifiers>
      <modifiers>
        <type>CritChance</type>
        <amount>0.25</amount>
      </modifiers>
    </modifiers>
  </statusEffect>
</statusEffects>