Crystal Magic Weapon

Further sharpens Magic Weapon via crystallization. Reinforces a weapon with crystal.

After much experimentation, Emrydys found the crystal medium facilitated a stronger bond between weapon and soul.

You touch a nonmagical weapon that you have equiped. Until the spell ends, that weapon becomes a magic weapon with a +3 bonus to attack rolls and damage rolls. In addition, the weapon can switch between it's normal damage type and Slashing damage. Any creature hit by a crystal weapon, is considered vulnerable to the damage dealt by a crystal weapon. A creature that is already vulnerable to Slashing damage takes an additional damage dice worth of damage when rolling.