Greater Familiar

Having gained much knowledge on the arcane nature of your familiar, you have learned to further empower it. When you cast Find Familiar, you may choose to cast it at 2nd level or higher and expend 20 gp worth of materials in order to summon a familiar with the size of medium. You may also choose to cast the spell at 4th level or higher and expend 40 gp worth of materials in order to summon a familiar with the size of large.