You are playing Campaign Mode.

"Black horsemen have passed through Bree. On Monday one came down the Greenway, they say; and another appeared later, coming up the Greenway from the south.

-Aragorn, The Fellowship of the Ring

Resolution: Starting with the first player, each player may choose one of the following boon cards and attach it to a hero he controls: Tireless Ranger, Skilled Healer, Valiant Warrior, Noble Hero. The chosen cards have been earned by the players.