Collecting enough mushrooms in Afterbirth turns you into a mushroom-person, strikingly similar to a Toad.One of the messages dispensed from the Fortune Teller is 'Your princess is in another castle'.The description of the Liberty Cap is ' Touch fuzzy, get dizzy'.Rebirth has an item called Gnawed Leaf that gives Isaac a raccoon tail and lets him turn into a statue.What does it look like? A copy of the original Super Mario Bros. One of Rebirth's items allows you to jump.The Bobby-Bomb walking bomb upgrade is a clear reference to Bob-Omb.The Magic Mushroom and the Mini Mush are direct references to Mario's Super Mushroom and Mini Mushroom.The 1-up mushroom that follows you around is green with white spots.