Could you have it add mana, or a mana boost?
Is this item held by the user? If it not held by the player, the attributes may not work, though. These work for clothing, weapons, or armor.
Attributes.BonusMana = 15;
Attributes.RegenMana = 5;
Attributes.LowerManaCost = 100;
Hmm... yeah, it does not seem to take any attributes. Figured it could not be that easy 🙂