Midnight Masquerade

Sunlight - You may cast Midnight Masquerade by paying {1}{w}{u} rather than paying its mana cost.
Whenever Luna rises, look at the top four cards
of your library and manifest one of them. Put a mask counter on it and shuffle your library.
Whenever Helios rises, turn the card manifested with Midnight Masquerade face up. Sacrifice Midnight Masquerade.
Lords and ladies step and sway; as they dance the night away, they'd never guess who's come to stay.