Bao, Enigmatic Companion

When Bao enters the battlefield, create two 1/1
white Aura enchantment creature tokens with lifelink and flying.
{t} Prevent all damage that would be dealt to and
dealt by target creature this turn. That creature
gains hexproof until end of turn.
Whenever you cast a spell from your hand, reveal
the top card of your library. If it's a nonland card
with lesser mana value, you may cast it without
paying its mana cost.