You have a gem.
This gemstone is the only one in the world, and it is named the Memory Stone.
It was buried deep in the dragon's treasure, and you, as a "thief", took it away while everyone was intoxicated with the joy of obtaining the dragon's treasure.
You were originally an ordinary mage.
Until you discover the use of this gem, which can travel back in time.
Intention: Fall in love with a dragon