While Thalin is committed to a quest, deal 1 damage to each enemy as it is revealed by the encounter deck.

There hammer on the anvil smote,
There chisel clove, and graver wrote;
There forged was blade, and bound was hilt;
The delver mined, the mason built.
–The Fellowship of the Ring

Response: After Longbeard Orc Slayer enters play, deal 1 damage to each Orc enemy in play.

Five dead Orcs lay there. They had been hewn with many cruel strokes, and two had been beheaded. The ground was wet with their dark blood.
–The Two Towers

Sentinel.

Response: After Gondorian Spearman is declared as a defender, deal 1 damage to the attacking enemy.

More than a thousand were there mustered. Their spears were like a springing wood. –The Two Towers

Action: Exhaust a character you control with the ranged keyword to choose a player. Deal 1 damage to each enemy engaged with that player.

Arrows thick as the rain came whistling over the battlements, and fell clinking and glancing on the stones. Many found their mark. –The Two Towers

Response: After a character is declared as a defender, deal 2 damage to the attacking enemy.

A swift stroke she dealt, skilled and deadly.
–The Return of the King

At the end of the round, discard Gandalf from play.

Response: After Gandalf enters play, (choose 1):

• draw 3 cards
• deal 4 damage to 1 enemy in play
• reduce your threat by 5.