Hello Arkham Horror fans,
I'm a german fan of Arkham Horror and we play the game with all the expansions. In the last expansion (Black Goat of the Woods) was a new card (Milk of Shub-Niggurath) we do not understand exactly.
Milk of Shub-Niggurath:
Movement: Discard MoSN to move all non-spawn monsters in play to your current location. Then reduce your sanity to 0 and go insane!
What is the meaning of non-spawn monsters?
Thanks in advance