Sunrise

Affinity for Celestial (This spells costs {1} less to
cast for each Celestial permanent you control.)
It becomes day as Sunrise resolves.
Add {w}{w}{w}{w} to your mana pool.
Cipher (Then you may exile this spell card encoded
on a creature you control. Whenever that creature
deals combat damage to a player, its controller may
cast a copy of the encoded card without paying
its mana cost.)