Ozma

You lose the game if Ozma leaves the battlefield.
If {w} was paid - Ozma has Protection from White,
Vigilance, and Protection from Enchantments.
If {u} was paid - Ozma has Protection from Blue,
Flying, and Protection from Instants.
If {b} was paid - Ozma has Protection from Black,
Menace, and Protection from Artifacts.
If {r} was paid - Ozma has Protection from Red,
Double Strike, and Protection from Sorceries.
If {g} was paid - Ozma has Protection from Green,
Trample, and Protection from C