Steel Void

Physicality {w}{b} (As you cast this spell, you may pay an additional {w}{b}. If you do, it becomes an Aura Enchantment with Enchant Player)
Artifacts and enchantments you control have hexproof until the beginning of your next upkeep.
Artifacts and enchantments enchanted player controls are 1/1 Elemental creatures. They are still artifacts and/or enchantments.