This flail has been in the care of Lord de'Arnise for some time, a relic of his adventuring youth. It has been kept disassembled, the individual pieces stored in separate locations, and only used in the direst of emergencies. Lord de'Arnise was likely concerned about the powerful magic that the weapon radiated when compiled, and rightfully so. A trail of destruction has followed it through history, leading straight back to the original owners. The flail was the creation of the warlike rakshasa, a race of vengeful spirits that crave human meat, and used as an adaptable weapon that could suit any battle. During a particularly violent hunt, the flail was lost, only to be returned when they used their affinity for magic to locate its powerful aura. They discovered that the weapon had found its way into the hands of a great human warrior, and the battle that followed was truly splendid. They have since used the item as bait countless times, "losing" it again and again. Powerful items gravitate towards powerful people, and powerful people yield the most glorious battles.
You gain a +3 bonus to attack and damage rolls made with this weapon. When you hit with an attack using this magic flail, the target takes an extra 2 acid, 2 cold and 2 fire damage.
While you hold this weapon difficult terrain doesn't cost you extra movement. In addition, magic can neither reduce your speed nor cause you to be paralyzed or restrained.
When you attack a creature with this weapon and roll a 20 on the attack roll, the creature is "slowed" for 1 minute as as if you had cast the slow spell (no save, no concentration required)
Proficiency with a Flail 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.
Sap. If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.
Notes: Damage: Acid, Damage: Cold, Damage: Fire, Bonus: Magic, Sap