In the final room of the Tower of Spirits, with the four Phantoms, take control of the Torch Phantom. First, however, send Link to the Safe Zone on the west side of the room. As the Torch Phantom, go to the door leading to the area where the Warp and Normal Phantoms are located and light the torches to make the door open. A Phantom Eye will then appear. Enter the area with the Warp and Normal Phantoms, then go to the east side of this area, beside the Normal Phantom, and talk to him. Now that he is out of the way for the while, switch to Link. When the Phantom Eye can't see you and the Warp Phantom is heading to the east side, run in and take control of him. You will now most likely be spotted so run back to the Safe Zone. When the Phantoms stop chasing you, go where the two switches are located. Since there is sand blocking this area, Zelda cannot go with you. Let the Phantom Eye see you, then run across the sand. Next, warp to the Phantom Eye as Zelda and step on the switches so the door behind the Normal Phantom opens. Next, take control of the Torch Phantom again and stand beside the Normal Phantom. Talk to him again, then switch to Link. When the Phantom Eye cannot see you and the Warp Phantom is moving to the east side of the area, move in and stun him. Repeat this for the Normal Phantom and run into the Safe Zone. Call Zelda and push the next door open to get the Compass of Light.