Blackbane

Blackbane is one of Roshar's most deadly natural poisons. The leaves have to be dried out before reaching its potency.
Syl brought blackbane leaves to Kaladin because she wanted to make him happy ... because, according to her, he'd been so happy with the leaf he'd had before. Because, to her, everything for him seemed to go wrong when he lost that leaf.
==Appearance==
It has a narrow, dark green leaf with a point divided in three; a trefoil prong.
==References==
Category:Flora of Roshar