Hey, Reddit has been making their own list of items that they think would be cool in Rebirth. I wanted to get your opinion on mine :D! The item's name is The Crucible and it just looks like a stone tied to Isaac's ankle (reference to the witch hunts). It's a passive item that makes it so every 3rd room (excluding shops, boss fights, etc.) is a room filled with champion monsters. If you clear this room, you get a permanent but small damage increase and a small permanent movement speed decrease.