Collecting
A collection is a certain number of cards united by a common panorama and place of action. A collection can contain from 3 to 8 cards. A collection is considered complete if all the cards in it are on your Ethereum address.

Mining tokens
As long as the card collection is on your Ethereum address, you mine a number of METR tokens equal to the sum of the cards' energy each day.
At any time, you can request to withdraw the tokens to your Ethereum address. You can then sell them on an exchange, in a liquid pool, or stake in the project’s DeFi protocol to increase revenue from the collection.