An uno reverse card. So basically you pick it up and the red guy gets shoved into the water by thin air and secret. You have to make pirple by mixing red and blue with a mixing thing you will find in the "reverse" ending. Purple will jave to hide in the hole in the cliff and the ending for "???" is shown. Then you have to click on the red eyes on the surface of the cliff.

Obby ending so basically you just run away from red and you try not to get caight