Chrono Stasis

As an action, you crush the hourglass in your hand as though it were brittle, causing the powdered metal to magically encircle your forearms for the duration.

While concentrating on this spell, you can use your reaction when an attack or effect would reduce you to 0 hit points, triggering the spell before the damage is dealt and causing yourself to be petrified. The substance is the material of the powdered metal that was part of the material component, and the condition lasts for 8 hours, or until dispelled with a Greater Restoration spell.

While in the stasis, as long as you have at least 1 hit point, you heal for 1 hit point every 10 minutes. If you die in this stasis, your body is preserved as if with the Gentle Repose spell. You cannot gain the benefits of a short or long rest while petrified in this way.

Effects such as Dispel Magic do not remove the petrified condition, but will cause the healing properties of Chrono Stasis to end.

When you cast this spell using a spell slot of 4th level or higher, the range becomes Touch, and you can target one willing creature as an action. An unwilling creature is not affected, but the spell is not lost as long as you maintain concentration.