How do you get the snake in Club penguin Herbert's revenge in the vegetable villain?

That's a very good question! It took me some time. Before you use the corn seeds, search around the area. It's right beside the ladder, well around there. Once you click a certin spot, a river will appear and the snake token will be on the other side. Use Chill (white elite puffle) on the river. and you will get the snake token!