Merrig

A small, very thorny wild rose bush native to semiarid to temperate shortgrass prairies. Its leaves look like those of other roses; its flowers have five red-veined  and  red-edged  white  petals  and  yellow centers. A tea brewed from merrig thorns contains a drug which can increase  the user's  Presence score by 5 points for one day, so  it   is  particularly   prized  by Mentalism  spell-users. Unfortunately, merrig tea is  highly addictive,  and  withdrawal causes the loss of 10 points from Constitution and 15 points each from Reasoning  and Memory;  these losses  heal naturally  at one point per month.