His presence is marked by icy mirrors and flickering lights.
The boys track the Alpha Vampire to a hidden monastery. They attempt to negotiate, warning him that the Leviathans—his supposed allies—are actually planning to exterminate his kind by poisoning their food source. [S7E22] There Will Be Blood
With Castiel’s blood already secured, the brothers turn to Crowley. He agrees to help but demands they find the first, as his own blood is a "last resort" that could be used against him. His presence is marked by icy mirrors and flickering lights
Kevin Tran remains a prisoner, forced to translate the Word of God under the threat of his mother’s life. With Castiel’s blood already secured, the brothers turn
In the penultimate episode of Season 7, Sam and Dean Winchester race to assemble a powerful weapon to take down Dick Roman and the Leviathans. Following instructions from the Word of God tablet, they must combine the bone of a righteous human with the blood of three "fallen" beings: a fallen angel, the King of Hell, and an Alpha monster. The Quest for the Alpha's Blood