Pegasus of Prismatic Auras

Bestow {6}{g}{w}{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.)
Whenever you cast an enchantment spell, draw
three cards. You gain 6 life.
It is said that upon seeing such a creature, the mind
wonders in it's beauty and the soul is cleansed by it's presence.