Burst of Strength

In a sudden eruption of fortitude, you break bonds in inhuman fashion. If you are grappled by a creature or non-magical restraints when you take this action, you immediately escape the grapple.

Alternatively, if you have been grappled or restrained by a spell or a magical effect or item due to a failed saving throw , you immediately re-roll the saving throw with advantage . In either case, you suffer a level of fatigue at the end of your turn.