Wyvern Essence is a new well of power accessible by the player characters. Starting at Level 4, you will have a total of 16 essence points. You gain 4 more points per level. Essence points recharge at a rate of 2 points per long rest. These points will be able to be used for either your transformations and special abilities that your Wyvern Aspect has bestowed upon you.

Level 4 - Wyvern's Constitution Feature: Gain 2 hit points per level, and gain 2 point per level up thereafter.