Instead of feeling painful, the wounds feel hot and throb; and instead of blood, the body's “spirit energy” leaks out, only to be replaced by demonic energy from the cursed sword, changing the target into a monster if the sword had the final hit. (the dm chooses any cr 1 monster)

The target that is hit with this sword takes 2d6 damage.

You have one free hand because the other is a sword.

You are unable to use any two handed weapons but can still use one handed and versatile weapon with one hand.