Grimm isn’t always about fighting wesens; sometimes, the battles are with other supernatural entities. Such is the case in “Dyin’ on a Prayer” when a Rabbi tries to help his family by summoning an ancient creature known as a “Golem.” Meanwhile, mama Hexenbiest, Elizabeth (Louise Lomard), continues to riddle out how Adalind (Claire Coffee) made the strange potion so she can help Nick (David Giuntoli) regain his Grimm powers.