Jennifer Kale

Lifelink
{x}{x},{t}: Gain life equal to half of the mana spent
on this ability.

If Jennifer Kale is sacrificed as part of an ability activated by Agatha Harkness then Agatha Harkness gains Lifelink

"The fact that the face swelling decreased so quickly means it could be only one type of poison, Alewife's Revenge."