Battle at the Crossings
The Crossings of Poros #163 (x1)
4A-B (20)

You've reached the Crossings of Poros, but the enemy is hot on your heels. Desperate, you blow a loud note on your horn. From the northern shore you hear horns answer, and the soldiers of Gondor rush to your aid.

When Revealed: The first player takes control of Poros Garrison. Search the encounter deck and discard pile for each enemy that belongs to an encounter set denoted by the first icon on each set aside stage 3 and add them to the staging area. Shuffle the encounter deck.

The Back Serpent leads your pursuers in a final, savage attack. You must hold the crossings against them or fail at the last leg of your journey.

Forced: After an enemy attacks and destroys a character, remove X progress from this stage. X is the attcking enemy's printed

This stage cannot be defeated except at the end of the combat phase. If the players defeat this stage, they win the game.