Dios, Deep-Soul Celestial

Constellation — Whenever Dios, Deep-Soul
Celestial or another enchantment enters the battlefield under your control, you may have
target enchantment become an X/X creature
until the end of turn, where X is equal to it's converted mana cost. It's still an enchantment.
Enchanted and enchantment creatures you
control get +1/+1 and have flying.