I have a level 45 Witch Doctor in Diablo 3, and I haven't played in over a year. Maybe even two, it's been a loooong time. I distinctly remember a cool strategy back then was to sacrifice your zombie dogs, but for the life of me I cannot seem to figure out how to do it now. The Diablo 3 website shows it to be available at level 13, yet I can't find the spell. Where do I find Sacrifice?