13x02 The Rising Son

On the way back to the bunker, the Winchesters and Jack stop at a hotel and are met by Donatello the prophet. Amara ate his soul, but he has been mentally making the moral choice ever since, and he was drawn to Jack's power. Jack reads the Bible to learn more about himself and his family. Realizing he'll need more protection, the Winchesters try to get him warding tattoos, but he reflexively attacks the tattoo artist for hurting him and his body heals the ink away. Dean takes this as proof that Jack will turn evil, while Sam thinks it's because he lacks control. Meanwhile, the final Prince of Hell, Asmodeus, takes charge of Hell until Lucifer returns, disguising himself as Donatello to trick Jack into freeing the Shedim — Hell's darkest creatures — to be a hero. The brothers and the real Donatello appear, and when Asmodeus hurts them, a flicker of Jack's power makes him flee. At the bunker, Dean admits to Jack that he will kill him if he turns bad. In the alternate world, Lucifer protects Mary, intending to trade her for Jack when they get home. They meet an alternate version of Michael, who killed his world's Lucifer. Michael is the stronger of the two, and keeps this Lucifer alive because he needs him for something.