Mandrake

Mandrake is a deadly poison. With deadly nightshade it makes Type III Poison Powder (1-10 damage per minute for 5-10 minutes; survivors are incapacitated for an hour), and a dram goes into Black Death. Its root has darker uses: a root dug up from a graveyard or from beneath a hangman's gibbet is carved into a victim's likeness for the black magic spell Image, and a necromancer controls a necromantic golem through a graven image made from one. It grows in woods and fields and costs 100 G.P. per dram.