The Nightshade Vendor COB for Creatures 1 was created by the late SteerPike. It is classified as a Vendor, and dispenses sprigs of Nightshade that will make creatures sleepy.
The Nightshade Vendor uses the C1 class numbers:
It can currently be downloaded at GirlySatan's Creatures Webpage
A C3/DS conversion of this vendor, courtesy of Silverpelt, can be downloaded at Creatures Caves