curse_greed.xml

<statusEffects>
  <statusEffect>
    <name>Curse of Greed</name>
    <key>curse_greed</key>
    <type>curse</type>
    <icon>wounds_7</icon>
    <description>
      There is a cursed item in your inventory.
      [p]
      Reduces movement speed by 5, plus 1 for every 100 gold in inventory when the curse was applied.
    </description>
    <hasTurns>false</hasTurns>
    <tags>randomItemCurse</tags>
    <enterActions>
      <enterActions>
        THEN AddFixedModifier -> stat:MoveSpeedBonus, quantifier:CurseGreedMoveSpeedBonus;
      </enterActions>
    </enterActions>
  </statusEffect>
</statusEffects>