Two Feathers are required for this trick. Go to the first Ghost House, then run and jump while you are Caped Mario. Fly to a ledge. Run forward then run back toward the entrance. Jump to reach the ledge. Run right and you will fall and find four yellow blocks and a door. Break the four blocks to get extra lives, then go through the door. Go through the goal and you will go to a happy hill and the Top Secret Area. You can get one Yoshi, two Fire Flowers, and two Feathers here. You can return here as many times as desired.