An Ancient Relic of the Decade

I prepared this ancient relic of the decade together with my six-year-old son. Forgive us for any mistakes or simplification, but we have a small amount of bricks. This is our very first submission :)

It presents the idea of Ninjago, emphasizing that it has been in existence for 10 years. This perfect exhibit for the Ninjago museum has a special mechanism on the right side that opens the true face of this relic (on the back there is a connection between the sides symbolizing the opening mechanism).

When opened, the tire and the minifigure reveal a "10" symbolizing the 10th anniversary.

However, the greatest treasure awaits the bravest of Ninjago - a hidden golden cup that will emerge over the decade's mark only for the most courageous and worthy Ninjago.