|Rōmaji||Dhama no Satori|
Jack's Knack is an ability in the Dragon Quest series. It channels the "Voice of Vocations" to enable class changing on the field.
Dragon Quest IX: Sentinels of the Starry Skies
This ability is learned with 10 skill points allocated into Enlightenment skill. Players will still need to return to Alltrades Abbey in order to revocate a level 99 character, however. Jack's knack costs 4 MP to perform, but the magic points will not be restored if a vocational change is cancelled.
The skill is handy for inexpensive healing, as the HP and MP of a character scales to the level of that vocation. As such, a weakened character can go from a high leveled vocation to one of a lower level, be healed with a Medicinal herb, and then change back to their original vocation with the amount of HP restored scaling to the higher leveled profession.