You have the possibility to improve the rarity of an Armz.
To do so, you need 3 Armz of the same rarity.
Among them, 1 will be upgraded to a higher rarity, and the other 2 will be burned.
If they are Common, then it will become Rare.
If they are Rare, then it will become Epic.
Epic cannot be upgraded to Legendary.
But, you have a 3% chance of getting an extra upgrade.
So upgrade a Common to Epic, or a Rare to Legendary!
The cost in PROT varies depending on the rarity of the Armz being fed:
Common: $20 in PROT
Rare: $30 in PROT
On top of that, 0.05 BNB is added as fee (see Tokenomics for more information)
And 50% of these fees will be used to buyback PROT and fulfil the contract that handles fights rewards.