SkyCraft

From BoardGameGeek:

Our King lies ill in the tavern after enemy shamans unleashed a deadly curse across the valley. You are the only member of the King's party with basic alchemy skills and the ability to navigate the skies in your air balloon. Only you can save the valley: heal the villagers, hold back the orcs, find a cure, and revive the King! Choose your character. Decide whether to excel in foraging, potion crafting, skyship navigation, astronomy, mysticism, or other unique specializations. Adapt to changing circumstances, and switch between classes as needed. -description from the designer