Event cards govern the way the monsters move. In that vein, the ones I can remember off the top of my head are Monster Frenzy (all monsters move) Hordes Activate (hordes move or form from single minions) and Loners Activate (greater monsters move). There are reinforcement cards, cards that state that reinforcements arrive behind the party and ambush cards where a monster jumps out and attacks from behind a terrain object. Some cards are drawn once and removed from the deck. Found object cards, scenario event cards, trap cards things like that. In all, there is 25 cards. The ones labeled “remove and reshuffle” or with only “reshuffle” guarantee that you never run out of cards. In theory, it could mean that a scenario event does not happen. I suspect that is rare but I’ve only played once thus far.
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