These tall stalks that grow out of stagnant water end in a thick bulb with a hard shell. In the colder months, the stalk withers, and the bulb falls off, to float around until the bulb softens and falls away to disperse the seeds within. The seeds sit freely in the shell, and when shaken, make a slight rattle noise, which is unnerving when the wind rushes through a cluster of rattlestalks. People who live in the swamps will often use the unnerving aspect of the rattlesnake to create fear-inducing noisemakers.

Traits

Fear. When rattled, those who have no knowledge of the rattlestalks must make a DC 8 Wisdom saving throw, or be Frightened for 1d4 minutes.