Hexblade Curse

Ability to place a baleful curse on someone.
As a bonus action, choose one creature
you can see within 30 feet of you. The target
is cursed for 1 minute. The curse ends early
if the target dies, you die, or are KO'd.
Until the curse ends, you gain:
•Proficiency Bonus to dmg. rolls vs the target.
•Critical hit with 19 or 20.
•Heal warlock level + Char. mod. if target dies.
—1/short or long rest.