class_knight_status_3.xml

<statusEffects>
  <statusEffect>
    <turns>50</turns>
    <name>Blade Rush</name>
    <key>class_knight_status_3</key>
    <icon>knights_grace</icon>
    <allowMany>true</allowMany>
    <modifiers>
      <modifiers>
        <type>AttackSpeedBonus</type>
        <amount>15.0</amount>
      </modifiers>
    </modifiers>
  </statusEffect>
</statusEffects>