When NFT reaches level 5, user can upgrade NFT Quality to a higher Quality by using 2 NFTs of the same Quality but losing 1 NFT. It retains the Attributes value of the base NFT.
Users can add The percentage of success Quality up their Travel NFTs by burning GAS
Common
20%
70%
Uncommon
15%
60%
Rare
10%
50%
Epic
5%
40%
Legendary
NA
NA