Jorge Balaguer & Santiago Selvi 
El Rival [PDF ebook] 

Venice 1756. As the majestic city of Venice sleeps, hidden from prying eyes,  black magic rituals are performed in old and damp cellars. Necromancers prepare the arrival of the Devourer, the Great Consumer of Souls,  who is said to give them the power to rule both day and night… for all time. There is only one man capable of stopping them, one who is bonded to an object of power; a mask as old as time… He is a guardian of the mystic, a hero of legend. He is… El Rival.