Essence is an in-game material that you can use to craft Limited, Rare, Super Rare, and Unique cards in Sorare Football. You can obtain it by participating and getting a good ranking in the different competitions.
Essence in Sorare comes in different scarcities: Limited, Rare, Super Rare, and Unique. When you craft a card using a specific scarcity of Essence, the resulting card will match the same scarcity level.
For example, if you use Limited Essence to craft a card, you will receive a Limited card.