There are 4 Ambush cards that force player to draw Monsters on their neighbors Maps.

Ambush cards are added to the Explore Deck in-between game rounds.

Monster Terrain type only appears on Ambush cards and will give negative points to players at the end of each round, if those aren't defeated.

Unlike other cards, after an Ambush card is revealed, it is discarded back to the box and will not be reshuffled into the Explore Deck again.