You have a +3 bonus to attack and damage rolls made with this magic weapon.
This small blade is about 5 inches in length and resembles a small dagger made of black steel and red leather to cover the handle. The pommel of the blade has a small glass vial attached to it with a small retractable pin. The glass of this vial appears to be stained with blood.
As an action you may prick a willing creature and yourself, and take a blood sample into the vial at the end of the knife. With this blood taken the blade bonds the 2 of you and allows the attuned to transfer hit points back and forth between the 2 targets as an action. The willing creature can attempt to force this exchange to happen with a successful insight competition between the 2 marked creatures. In either case the player/character must declare how many hit points they would like to take, then the 2 marked creatures must roll to see who wins, the winner takes the hp from the other.
As a bonus action the attuned expend a charge and may swap positions between the 2 marked creatures. The item has maximum charges equal to the proficiency of the attuned creature plus the proficiency (if any) from the second marked creature. The knife regains a single charge every dawn.
As a Reaction the attuned may take any damage that the second marked is taking. The amount taken can equal the attunes levels x 5.
Proficiency with a Dagger allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Nick. When you make the extra attack of the Light property, you can make it as part of the Attack action instead of as a Bonus Action. You can make this extra attack only once per turn.
Notes: Bonus: Magic, Charges equal Prof bonus of both creatures, This small blade is about 5 inches in length and resembles a small dagger made of black steel and red leather to cover the handle. The pommel of the blade has a small glass vial attached to it with a small retractable pin. The glass of this vial appears to be stained with blood., Damage, Combat, Finesse, Light, Thrown, Nick