Crystal Kinoko

The Crystal Kinokos (クリスタルキノコ, Kurisutaru Kinoko, Crystal Mushroom) are three mystical mushrooms made out of crystal that appeared only in the Yoshi's Safari story arc from Super Mario-kun volume 9.

The Mushroom Kingdom is afflicted by the chaos, a mysterious force that is disrupting the kingdom's natural order. Princess Peach asks Mario to solve this by collecting the three Crystal Kinokos, grant a wish and save the Kingdom. Accompanied by Luigi and Yoshi, Mario meets Birdo, reincarnated into a fairy, whose ribbon can help them locate the mushrooms.

The first one is located in the ruins of Bowser's Castle at Valley of Bowser, protected by the Koopa Troopas trapped in the blocks and by a kart circuit Thwomp.

The second one is in possession of Bowser and he is putting it as a price in a series of survivalist challenges against his soldiers. Mario and his friends lose the challenges and their Crystal Kinoko is confiscated by Bowser, who intend to use the wish to grant himself a nice vacation. Bowser is defeated, but he flees with the mushrooms.

The third is in possession of Ludwig, who gets defeated, alongside his mecha, by Mario and Yoshi. While adventuring in Bowser's Castle, the duo momentarily loses the Crystal Kinoko to a Boomerang Bros., but they quickly defeat him and take back the Crystal Kinoko. After defeating the armored Bowser, Mario collect the last two Crystal Kinokos and asks for the Mushroom Kingdom to be cleansed by the chaos.