Super Bell

The Cat Bell is a item introduced in the upcoming game for Wii U, Super Mario 3D World. It is a golden striped bell with beady eyes. When obtained, Mario, Luigi, Princess Peach, or Blue Toad will transform into their cat form, which allows them to cling up walls, slide into enemies and attack in midair.

Trivia

 * The Cat Bell somewhat resembles an upside-down golden Super Acorn