Bloodtaste Blade

+1 to attack and damage rolls with this weapon.
After a successful melee attack with this weapon,
until reduced to 0 hp, you have disadvantage on
attacks against other targets, and you gain 1d6
slashing damage. You may attempt to end this
effect at the end of each of your turns with a
DC 14 Wisdom saving throw.
Once this cursed blade draws blood, its bearer
thirsts to spill the victim's very last drop.