To participate in the boss battle you require one of each pet type. (Green = Novice, Blue = Mage, Black = Assassin, Red = Berserker)
The boss battle consumes 100 stamina from each NFT participating in the battle. Once you have selected a pet for each type you are able to fight the boss, to find out the formula for the outcome of the fight please refer to the gitbook within the 'tools' section.
If you are victorious then you will receive a percentage of total reward depending on the amount of damage you dealt. You will also get a 5% chance of receiving an NFT crate.
You can only claim your rewards once the boss is defeated.