For folks outside of the T'Challa's family line, the herb is lethal. Kasper Kole got a synthesized version of the heart shaped herb from Eric Killmonger. Eric (T'Challa's sworn enemy) did it to anger the Tribal Leaders. T'Challa sort of manipulated the situation to have Eric do it knowing that he would because of his disdain for Wakanda tribal tradition.
It was a tightly woven story of manipulation and end games that lead to Kasper getting his heightened abilities. Of course T'Challa forced him to go through a rite of passage before allowing him to assume the mantle of the White Tiger.
Much respect to Priest for doing his thing on this and other stories in the BP mythos. Smh at Hudlin for unraveling such intelligent storytelling in favor of his Blaxploitation version of BP.
Which elements of Hudlin's BP do you see as "Blaxploitation"?
Frankly, I have enjoyed both Priests and Hudlin's work on the character.