Forest of Illusion 4

Forest of Illusion 4 is a level in Super Mario World. It is a ground level with lots of Lakitus. If the player takes a Koopa Shell and takes it to the ditch between two Lakitus, he/she can get loads of 1-Ups.

To reach the second exit, go to the blue hovering pipe, about halfway through the level. To get on it, you might want to lure a Koopa Paratroopa from a bit to your right. Then, however, get in the pipe and get that key.