The Megaflash Infinijump sticker.
The Megaflash Infinijump is a Battle Sticker seen in Paper Mario: Sticker Star. It is Mario's strongest Infinijump sticker, and deemed the strongest sticker in the entire game. This extremely rare sticker could only be found in Long Fall Falls after Mario manages to get away from the giant blue Cheep-Cheep again.
The Megaflash Infinijump is a red boot. It also has a rainbow background and takes up nearly six sticker spaces in the Sticker Album.