From SmashWiki, the Super Smash Bros. wiki
Scheming Sorcerer (known as A Sorcerer's Schemes in PAL versions of the game) is a co-op event match in Super Smash Bros. for Wii U. In it, player 1 controls Yoshi and player 2 controls Toon Link. They must defeat normal male and female Robin and metal male and giant metal female Robin. One opponent initially appears and more appear either by defeating the current one or when Kamek appears and changes the stage background.
Clearing the event on normal or hard difficulty within 90 seconds awards a First Striker Egg equipment.