You can create a minor schema.
Prerequisite: Caster level 10th.
Benefit: You can create a schema of a spell or infusion.
Etching a minor schema takes one day for each 1,000 gp in its base price. The base price of a minor schema is its spell or infusion level × its caster level × 400 gp. To etch a minor schema, you must spend 1/25 of this base price in XP and use up raw materials costing one-half of this base price.