In the Monster Box expansion, are the Horcrux cards used, and do its Hogwarts cards join the Hogwarts deck?

Question

Accepted Answer

Mostly no. Its encounters replace the Horcrux cards, and its Hogwarts cards are added to the Game 7 Hogwarts cards. One poster says the directions call for the Game 7 Horcruxes, but another played without them, and only a variant after Box 4 combines encounters with Horcruxes.

Harry Potter: Hogwarts Battle

In the Monster Box expansion, are the Horcrux cards used, and do its Hogwarts cards join the Hogwarts deck?