"Supernatural" season 11 is set to meet its season finale and fans are set to see Sam and Dean are set to face their ultimate test in episode 22. Also, God is set to appear and Castiel is rumored to return in the episode.

"Supernatural" season 11 episode 22 is entitled "We Happy Few." According to Spoilers Guide, Sam and Dean are going to be challenged in the episode while Rowena is set to make her move.

According to Intenational Business Times India, Sam and Dean are set to push through their biggest battle against God's sister Amara. In line with this, God is set to descend to Earth, along his children, in order to lock Amara again. As per the publication, Earth's Creator will unite and spearhead angels, demons, and some hunters, in order to save the world from Amara.

In other news, Castiel is rumored to return in "Supernatural" season 11 episode 22. According to Parent Herald, "We Happy Few" might see the character's return for him to help Sam and Dean in their final battle with Amara.

Fans saw the continuity of war in "Supernatural" season 11 episode 21, which is entitled "All in the Family." According to Spoilers Guide, Amara showed Dean how she was inflicting pain to Lucifer. The episode also saw Sam and Dean setting up a plan to save Castiel from Amara's hands.

"Supernatural" season 11 episode 21, "All in the Family," aired on May 11 while "We Happy Few" aired on May 18. Watch the season finale promo clip here.