This weapon is best described as the combination of a whip and a long sword. The pommel is that of a long sword and the blade is segmented, looking much like the body of a purple worm. Worm Swords are the favored weapon of battle priests and mid ranking warriors of the Cult of Orm. As worshipers of a titanic land worm known as the Ryzenorm, followers wish to emulate their deity by engaging in close quarters combat as often as possible so as to squeeze the life out of their enemies.
Unattuned, the weapon functions as a +1 longsword.
When wielding a Worm Sword with two hands, an attuned wielder can command the sword to extend and animate, making use of its Constrict ability.
Constrict On hit, deal damage and the target is grappled (escape DC 14). Until this grapple ends, the creature is restrained, and the sword can continue to constrict this target, but can not attack another target.