Minions Upgrading

You can get more battle powers by upgrading your NFTs.

Upgrading condition is to burn each 2 of them to get higher level NFTs.

Upgrade	Burn	Success Rate
Common	-	-
Uncommon	2 Common	100%
Rare	2 Uncommon	80%
Epic	2 Rare	30%
Legendary	2 Epic	10%

Each upgrade will consume $1 worth of TWI or STWI

If the upgrade is successful, a minion with a higher rarity will be minted; if the upgrade fails, only a minion of the same rarity will be minted.