Flying, double strike

You have Hexproof.

If your life total would be reduced to 0 or less, instead transform Enduring Angel and your life total becomes 3. Then if Enduring angel didn't transform this way, you lose the game.

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Angelic Enforcer

Flying

You have hexproof.

Angelic Enforcer's power and toughness are each equal to your life total.

Whenever Angelic Enforcer attacks, double your life total.

Flying, double strike
You have hexproof.
If your life total would be reduced to 0 or less, instead transform this creature and your life total becomes 3. Then if this creature didn't transform this way, you lose the game.

Flying
You have hexproof.
Angelic Enforcer's power and toughness are each equal to your life total.
Whenever this creature attacks, double your life total.