In the rules for Wandering Xykon, it says that as he moves through the dungeon he adds all Undead and Goblins to his minion stack.
But, Xykon's character card has him supported only by Undead, not Undead and Goblins as in the original game, so adding Goblins to his minion stack doesn't actually grant him any benefit.

Is there a mistake in either of these points? Because as it is, I'm not sure it makes sense.