When assembled, the key will have 10 charges. Once the last charge is used, the key will break and be destroyed. To prevent this, you can repair it (add charges) at Bob in Lumbridge or the armor stand in your Player-owned House before the last charge is used. Each charge will cost 49,200-10,000 Coins depending on your Smithing level (higher level = lower cost).
While the key initially comes with only 10 charges, up to 100 can be stored on it. Alternatively, a full set of Ancient ceremonial robes (mask, top, legs, gloves, boots), a Frozen key, and 10 million Coins can be given to Ashuelot Reis to permanently remove the required kill count for Nex. Doing so will "destroy" the items and make it so you no longer need to equip them to enter Nex's lair.
This Data was submitted by: The_Eggman, Feurean, and ChathMurrpau
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