D20:Imprint Stone Feat

You can create power stones to store psionic powers.

Manifester level 1st.

You can create a power stone of any power that you know. Encoding a power stone takes one day for each 1,000 gp in its base price. The base price of a power stone is the level of the stored power × its manifester level × 25 gp. To imprint a power stone, you must spend 1/25 of this base price in XP and use up raw materials costing one-half of this base price.
Any power stone that stores a power with an XP cost also carries a commensurate cost. In addition to the costs derived from the base price, you must pay the XP when encoding the stone.

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System Reference Document -> Feats