A shortsword with a 3 foot blade length. The blade is single edged with a sharpened clip-point for piercing. The guard and pommel are black made of an unknown metal. The guard curls  up towards the blade and end in clip-point blades just like the blade. The pommel is round and swirls with smoke in a glass filled ball.

Zymerian is intelligent with an intellect of 13

-extraordinary ability- Zymerian gains an extra attack as a short sword of speed +2. Except that when the blade isn't controlled by the wielder it will force the extra attack upon anyone that aids the wielder. The blade sees this as a sign of weakness and will continue to attack the person aiding the wielder until the person wielding the blade defeats its opponents or the aiding person is dead. i.e. of aid someone healing the wielder or casting a beneficial spell on the wielder or someone defeating the wielders opponent.

Zymerians Ego: (25) once the wielder can gain dominance ergo : greater ego score (players intelligence + charisma + level= player ego score. Players ego score decreases by 1 point for every average health score of damage taken in combat. I.E. a 7th level fighter with 49 health will lose 1 ego point for every 7 points of damage taken.) Once the players ego goes below Zymerians ego: (25) the blade will attack anyone aiding the wielder until death. 

if a players ego is at or above (26) they will gain control of the extra attack per round and they wish.

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

Notes: Damage: Piercing, wielder of neutral alignment, must be neutral but not true neutral, Damage, Detection, Utility, Combat, Sentient, Finesse, Light, Vex