Weapon (dagger), rare (requires attunement by a warlock)
this dagger use to belong to a mighty warlock named aexonrin the terrible. the dagger is a sentient weapon that craves blood. if the dagger goes a week with out a sacrifice then it will take control of the user and kill the closest living thing in sight. if you have done the sacrifice within a week the dagger will deal 1d4+*d4 where * is your warlock level.
(note: its will be a interesting item to give to a warlock at the start of the adventure)
Proficiency with a dagger allows you to add your proficiency bonus to the attack roll for any attack you make with it.
Notes: warlock, Finesse, Light, Thrown
very interesting weapon. could possible use in next game
I walk up to the BBEG just moments before a week passes without it tasting blood. GGs DM
The sacrifice doesn't specify a humanoid or like a creature of a certain size. So you could just, stab a fly.