Supernatural, Season 11, Episode 21 (All in the Family)
Protagonists: Sam, Dean, Chuck/God, Kevin, Castiel, Donatello, Metatron
Supernatural, Season 11, Episode 22 (We Happy Few)
Protagonists: Sam, Dean, Castiel, Chuck/God, Crowley, Donatello, Lucifer, Rowena
Supernatural, Season 11, Episode 23 (Alpha and Omega)
Protagonists: Sam, Dean, Castiel, Chuck/God, Rowena, Crowley, Mary Winchester