Esprellso

You touch a willing creature, and they fall into a deep, magical slumber. Over the course of the next 10 minutes, the target experiences the benefits of a long rest, recovering hit points, expended spell slots, and other abilities as if they had taken a full 8-hour rest. However, upon waking, they feel a strange mixture of rejuvenation and fatigue.

While the target gains the benefits of a long rest, the target suffers 2 levels of exhaustion at the end of their next short or long rest, as their body pays the price for the accelerated recovery.