Eldritch Cocoon

When you are reduced to 0 hit points, the cloak reacts instantly. The fabric wraps around you like a living sheath, forming a glistening cocoon laced with shifting runes and threadlike veins.

You are automatically stabilized and gain temporary hit points equal to your Warlock level + your Charisma modifier. While cocooned, your body remains upright and suspended just above the ground, swaying gently, as if waiting to hatch.

This feature activates automatically and does not require an action or reaction. It can be used once per long rest.