Reitō Power-up Kinoko

The Reitō Power-up Kinoko is a special Super Mushroom that only appears in Super Mario-kun.

While traversing a desert in the Special Zone, Mario, Luigi and Yoshi are attacked by a Blargg. Peach, seeing Mario in trouble, manages to grab a Flying ? Block, fill it with a Reitō Power-up Kinoko, and send it to Mario. Mario takes it and becomes Water Stream Mario, defeating the Blargg and cooling him and his friends from the heat.