SECRET ROOM ITEM POOL TIER LIST - The Binding Of Isaac: Repentance - YouTube
Guys, I'm extremely confused: after beating the boss I got Maw (that only belongs to the Devil Room item pool). I played the Hell Game in the Arcade, donated to the Devil Beggar and got The Nail, but I checked the wiki and none of those affect the boss drop ...
Devil Room (Item Pool) - Binding of Isaac: Rebirth Wiki
Devil Room | The Binding of Isaac Wiki | Fandom
Ten Ways to Get More Items in “The Binding of Isaac: Rebirth” - LevelSkip