Just recently I bought the Decent Expantion: Tomb of Ice. I comes with a new monsters, and I've liked it so far. However each monster comes with two double-sided cards, and I'm not sure which sides to use.

Thanks

would be the same as the base game.

each card has a 2, 3, 4, or 5 on it. Use for how many hero's your group is using.

The other set should have a bronze, silver, gold, and 'diamond' color emblem in the corner.
These are only used in the Road to Legend Expansion.

Now I feel stupid, I missed the numbered cards.

KAGE13 said:

Just to clarify, that's how many players (including OL), assuming that each player controls one hero (except when there are only 2 players and the hero player controls 2 heroes. You'll note that the #2 card side and #3 card side have identical stats because it is really the same situation as a three player game).

Its simpler to think of it as 'how many heroes, +1'.