Houshen Lu, Cloud Empress

Endow {u}{u} (If you cast this card for its Endow
cost, it's an Aura spell with enchant creature. If the
enchanted creature would die, instead destroy this
Aura.)
Flying, Immortal (This creature cannot take
damage, cannot have counters, and cannot change its
power or toughness.)
Enchanted creature has Flying and Immortal