Empower Artifice

Infuse a precious gem with any prepared spell to be cast at a level less than or equal to that gem's value divided by 100 (100gp for lvl 1, 200gp for lvl 2, etc.). Infusing a gem in this way requires the expenditure of that spell's spell slot in addition to the one used to cast Empower Artifice. Any creature who possesses such an infused gem may cast that spell at the specified level. Gems infused in this way may be used as or attached to projectiles, in which case the infused spell's effect replaces projectile damage. Gems infused in this way remain so until cast or dispelled. Using an infused gem to cast a spell destroys the gem; gems infused in this manner may only be used once.