Random allegiance

At the start of each turn roll one die: 1-2 the dragon attacks the Men of Gondor and allies, 3-4 it stands around undecided, 5-6 it attacks the forces of Sauron. Missile hits rolling 9-10 on 2d6 drive it to attack the other side next turn; a fireball hit stops it attacking the wizard's side for one turn.

Since dragons are rather indecisive beasts, one die is thrown at the beginning of each turn to decide which side the dragon will attack;