The Ancient Silver Dragon

1. It is theorized that their magic fuels magic in Musto, so arcane scholars argue for keeping it alive but contained. 

2. They arrived in Musto with their partner. 

3. They burned the Amber Hold and Northern Plains to punish humanoids for destroying a clutch of dragon eggs and killing their partner.

4. The dragon is in deep mourning. 

5. The dragon has been in isolation for centuries. 

6. Only the Wizards know how to contain the dragon to its island and ocean territory. 

7.  The dragon is borderline crazy and on the verge of going insane.

8.  The dragon only wants their family back.

9. The dragon has a unique hoard.

*All persuasion checks against the dragon are at disadvantage, while a magic item made in Musto is within 100 feet.