Aura strong transmutation; CL 17th; Slot none;
Price 60,500 gp; Weight 4 lbs
This beautifully crafted +1 longsword drains magic power from mages that it strikes. Whenever you score a hit on a spellcaster with this weapon, they must instantly lose a spell slot of a level equal to your damage divided by 5 (if they prepare spells, they choose which prepared spell or empty spell slot is lost). For the next minute, you gain one free casting of any spell you know or have prepared of equivalent level or lower. You may only gain a free casting once per day, although you can drain any number of spell levels.
Craft Magic Arms and Armor, creator must be able to cast 9th-level spells; Cost 30,250 gp
The secrets of this weapon are ancient and well-hidden by the craftsmen of the deepest forges. The gemdrain blade was developed by a fallen paladin seeking vengeance against a powerful evil wizard. The paladin fought valiantly and his weapon served him well, but the vile wizard prevailed and stole the design of the weapon for his own gains.
A great weapon for a magus or eldritch knight: anyone who wants to combine spell-slinging with sword-swinging!
– Max Porter Zasada