During the four acts of Diablo 4 Gold rapidly corrupts Prince Aidan and the Prince starts to lose control over the Lord of Terror's spirit - leading to the release of Hell's demons once more onto Tristram. The player, who is a named warrior, saves Cain and from then from that point on, Cain would be his constant companion giving out magical items for free and offering advice from his repertoire of ancient knowledge to once overcome the monster Diablo.

Cain comes back again to Diablo 3 as a supporting character. The character of the player, known by the name of Nephalem regardless of the Diablo 3 class they choose The character is requested by Cain's Ward Leah to help save scholars from the destruction of Tristram Cathedral which had been hit by a 'fallen star.' 

The three find out that the 'fallen star' is actually a person, whom they call the Stranger,' with no memory aside from the fact that he has lost his sword. The Nephalem recovers the sword that was destroyed into three pieces. However, they are stopped by the witch Maghda , who seizes the sword shards and takes away Cain.

After the conclusion of Act 1 , the controversial Diablo 3. the witch is able to torture Cain to make him fix the sword using his magical powers, but Cain is unable to do so, and is further tortured to the point of death. 

In a show of uncontrolled power, Leah wipes out Maghda's minions and Maghda escapes though not prior to taking the Stranger along with her and leaving Leah with a dying Cain. With his final power, he magically repairs the sword, unveiling its angelic origins, and asks players to give the weapon back to the master of it. The remainder of Diablo 3 is spent avenging Cain's murder and satisfying his last request.

With Lilith the mother of humankind, returning back to Sanctuary, Buy Diablo IV Gold lacks an academic character who can guide players on their journeys. While the return of the beloved character back to Diablo 4 is highly unlikely and unlikely, it shouldn't come as unusual if Blizzard determined to make it happen either way. Maybe Deckard Cain will return as an entity, or be reincarnated; whatever the case, it remains to be seen.