This rapier is uniquely built for what appears to be a giant of a man. The blade is longer and wider than a standard rapier, and the hilt looks like it was made for a hand and a half sword, though the design and function is still clearly a rapier. The hilt of this ornate rapier is wrapped in a fine silver chain and it's pommel is a weighted ball with a 3 inch spike on the end.

This rapier can be wielded with 2 hands, as if it had the versatile property, dealing 1d10+Str Damage. When the rapier's command word is spoken, the pommel falls free of the hilt, connected by 5 feet of the same silver chain that makes up the grip. As a bonus action, the wielder can attack with the chain as an off hand weapon attack dealing 1d6+STR damage. As a standard action, the wielder can attempt a whirlwind attack with the chain. 

Whirl Wind Attack - You quickly spin around, swinging the chain of this weapon in an arc around you. This attack deals 1d6+STR to each creature within 5 feet of you. To succeed this attack you must make a DEX saving throw equal to 10 plus the number of targets hit. If you fail, the attack deals half damage and you fall prone.

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

Notes: Damage: Piercing, by a fighter, barbarian, or paladin with at least 15 Strength., Finesse