Track the Orcs
The Weather Hills Nightmare#18 (x1)
Each enemy gets +10 enagement cost and cannot be optionally engaged.

When Revealed: Reveal the top of card of the Orc deck (reveal the top 2 card instead if there are 3 or more players in the game).

The weather makes the Orcs difficult to track. It requires all of your skill to read the signs in the rough terrain.