While Blood-thirsty Warg is in the staging area, it gains:
Forced: When it becomes Night, Blood-thirsty Warg engages the first player and makes an immediate attack.
The wold snarled and sprang towards them with a great leap.
–The Fellowship of the Ring
Cannot have attachments.
While a player is making an engagement check against Hunting Pack, it gets -1 engagement cost for each damaged character that player controls.
"...who now will wish to journey south by night with the wild wolves on his tail?" –Gandalf, The Fellowship of the Ring
Forced: After White Warg engages you, deal 1 damage to a character you control (2 damage instead if it is Night).
Shadow: If it is Night, attacking enemy makes an additional attack after this one.
While it is Night Pack Hunters gets -30 engagement cost.
Forced: When you engage Pack Hunters, search the top 5 cards of the encounter deck for a Warg enemy, and put it into play engaged with you (top 10 cards instead if it is Night). Shuffle the encounter deck.