When Dazzling Aurora is triggered, if no creatures are revealed, do all revealed cards get shuffled back into the deck? And if a creature is revealed, do the revealed cards get shuffled to the bottom?

Ruling: If Dazzling Aurora reveals no creatures, shuffle all revealed cards back into your deck. If a creature is revealed, shuffle the revealed cards to the bottom of your deck.

Sequence:

• Trigger Dazzling Aurora and reveal cards
• If no creatures revealed: shuffle all revealed cards back into deck
• If creature(s) revealed: take the revealed cards and shuffle them to the bottom of deck