Enduring Angel // Angelic Enforcer

Most creatures that promise to save your life do it once and then sit there as a body. This one weaponizes the near-death moment itself. A flier that intercepts lethal: instead of losing, you snap back to three life and flip into a payoff whose power and toughness track your life total and whose attack trigger doubles that number. The transform is a hard reset, not a scaling one; the back half always arrives from three, which is the point. The design gives you a floor to climb from rather than a ceiling to defend, and it front-loads the reward on the attack step, so a single unanswered swing takes you to six, then twelve, then higher, with the Angel growing to match every doubling. The protection is subtler than it looks: hexproof is granted to you, the player, not to the Angel, so opponents can still meet the creature with a removal spell or a board wipe, but they cannot reach around it to burn your life total or make you sacrifice. The load-bearing catch sits on the front clause: the flip only happens if it can. A second lethal hit while the Enforcer is already on the battlefield, or any effect that suppresses the transform, simply loses you the game. It is a safety net with a hole cut in exactly the spot an opponent will aim for, and it turns life, normally Magic's least interactive number, into both the shield and the sword.