Thanks guys, I'm really picking up awesome ideas here 
And to react on the above post: Yes, the dragon is dangerous... and where it not for the 'summoned' dragon, it would tear the good-guys armies apart. However, the dragon is not nearly the only problem. The flying castle is equipped with three or five trebuchets and some sort of 'magical spire' which hurls intense bursts of explosive magical energy towards it's target. Obviously, the castle is equipped with a magical shield.
Basically, the players will have to fight their way through the enemy ranks and figure out how to get on the castle... More than enough heroism left next to that dragon-ass-kicking
For the other player's powerups. I was thinking of a 'dragon sense' for the tattoo bearer, and skill-boosts for the other players. Though I do like the roar idea. Perhaps I'll give them all a 'once a week' power. An aura for the paladin for example.

And to react on the above post: Yes, the dragon is dangerous... and where it not for the 'summoned' dragon, it would tear the good-guys armies apart. However, the dragon is not nearly the only problem. The flying castle is equipped with three or five trebuchets and some sort of 'magical spire' which hurls intense bursts of explosive magical energy towards it's target. Obviously, the castle is equipped with a magical shield.
Basically, the players will have to fight their way through the enemy ranks and figure out how to get on the castle... More than enough heroism left next to that dragon-ass-kicking

For the other player's powerups. I was thinking of a 'dragon sense' for the tattoo bearer, and skill-boosts for the other players. Though I do like the roar idea. Perhaps I'll give them all a 'once a week' power. An aura for the paladin for example.