Silgrad Tower from the Ashes

Quote: Special Flora of Tamriel by Hardin the Herbalist
[...] Nightshade is reputed to be a very poisonous herb. However, the variety found in many parts of Elsweyr is cherished by Khajiits who have taken up careers in thievery. Many Khajiits will tuck a piece of Nightshade inside their armor to increase their abilities to skulk, hide, and become invisible.

Perhaps if you pick the Elsweyr strain of Nightshade, it can be used like a Sigil Stone. If you apply it to a weapon, you get a one time poison enchantment, or if you apply it to armor, you get a bonus to sneak.

well Nightshade is a Ingredient and we will probaly just use the one in vanilla

Irrelevant.