The Formidable Five
A long dark green grass that makes one more susceptible to being possessed.
This long dark green grass is stiff to the touch and looks rather uninteresting to most. It’s dark abilities give off a bad sensation and thus ward off most living things that still co-exist with nature, that is of course other than humanoids.
Touching it is not enough to make one more susceptible to possession. One must ingest it or preferably smoke it. Drying it up, grinding it to dust and snorting it will also do or even cooking it and using a needle.