When you start your turn with 0 HP, roll 1d20, and you succeed on a 10+. - **Third Success.** You become Stable. - **Third Failure.** You die. - **Rolling a 1.** Counts as two failures. - **Rolling a 20.** You regain 1 Hit Point. If you take damage at 0 HP, it counts as a failed Death Save or two failures if the damage is from a Critical Hit.