Seraph, Defender of Light

Flying, lifelink, doublestrike, indestructible
Bestow {1}{w}{w}{u}{u} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Enchanted creature has flying, lifelink, double strike, indestructible, and base power and toughness 3/3. It's also legendary and is an Angel in addition to its other types.