Metsamees Family/Cursed bloodsword

Blood servant

Blood servant is a sword Edmund made with his own hands.
During its crafting, every strike of the hammer was accompanied by malice and whispered words commanding to thirst for blood.
And the blade was quenched, in water and blood mixture, there was enough blood in the water to tint it red.
Edmund atempted to create a sword that would hunger for blood, and slice through any defence to quench its thirst for blood.
The outcome was not what he expected.
The blade is always razor sharp but enduces its yielder to maddness.
The more blood is spilled on the sword the more feral the yielder becomes.
Releasind mental restraints and calling forth the utmost power of the yielders body, but inturn berserks the mind.
Thus the maximal potential of the body can be called forth but inturn the yielder will only seek to kill, and will not be able to tell friend from foe.(its effect lasts aslong as the person holds on to the sword)
Not to mention the strain on the body.
Thus he had his wife Silvia to create a seath, to balance the sword. The seath will satisfy the swords hunger for blood, annulling the blades effect on the yielder.
The seath is made by Silvia, it is a normal seath material wise, but Silvia had woven sealing spells on it.

When the yielder of the blade holds the seath, he/she will not succumb to madness, but wont get the blades benifit either, inother words it becomes a normal sword.

It had became a unspoken rule not to use that sword, for its potential danger, and is hidden from view and reach.