Bastion's Blade

This longsword gives you a +3 to attack and damage rolls and it possess the finesse property. It’s also functions as a ring of spell storing and brooch of shielding. When you hit with an attack using this sword, the target takes and additional 2d4 force damage.
As a bonus action you can cause the blade to exert a wave of force energy. Each creature of your choice within a 30 feet of you must succeed on a DC 15 Constitution saving throw or become blinded for 1 minute. A creature can repeat this saving throw at the end of each of it’s turns, ending the effect on a success. This property can’t be used again until you take a short rest.
Using the Bastions Blade you can cast the following spells from it (+9 to hit): find greater steed, gift of alacrity, protection from energy, and steel wind strike. Once a spell has been cast using the sword, that spell can’t be cast again until the next dawn.

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Versatile, Sap