Amberbrand

This ornate glass bottle contains swirling amber liquid. As a bonus action, you remove the cork and manifest Amberbrand, a blade of golden force.

Whenever you hit with this weapon, it deals an additional 2d6 poison damage.

Amberbrand has 5 charges and regains 1d4 + 1 expended charges each day at dawn.

Drunken Seal.  When you hit a creature with Amberbrand, you can expend 1 charge to force it to make a DC 17 Wisdom saving throw. On a failed save, the creature is sealed within The World of Drunken Dreams for 7 days.

While sealed:

• The creature is removed from play.
• It doesn't age and requires no food, drink, or air.
• It is unaware of the passage of time, wandering endless drunken dreams.

At the end of the 7 days, the creature reappears in the nearest unoccupied space to where it was sealed.

A creature can also be released early by the attuned wielder as an action while holding the bottle.

After succeeding on this saving throw, a creature has advantage on future saving throws against Amberbrand's Drunken Seal.

Amberbrand has the Finesse property and grants a +3 bonus to attack and damage rolls made with it.

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Magic, Weapon Property: Finesse, Damage, Combat, Versatile, Sap