Crystal of power

A Crystal of power is built in the Study of a player-owned house. Crystals of power can change the element of a basic elemental staff for free, an elemental battlestaff for the price of 100 runes of the new element (air, water, fire, earth), or a mystic staff for the price of 1000 runes of the new element. It is not possible to create combination elemental staves this way.