Call of the Nightwing

Richiamo dell'Ala Notturna (Call of the Nightwing) (it)

Sorcery (CMC 4)
Create a 1/1 blue and black Horror creature token with flying.
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.)