The Secret Shrine

First, collect all 15 Stray Fairies scattered throughout Termina. Once you have them all, travel to the house on the eastern end of Ikana Canyon. Inside, you will restore the Great Fairy of Kindness, who will reward you with the Great Fairy Sword. This powerful sword must be equipped to an item slot and deals four times the normal damage.

To access the Secret Shrine, you need at least 16 Heart Containers. Make your way to Ikana Canyon and swim upstream, past the Blue Octoroks.

You will find a hidden cave entrance. Look for a Sun Crest above the door. Shoot it with a Light Arrow to open the way and enter to find the Poe Collector.

Your objective is to clear four rooms, each containing a mini-boss. After defeating each mini-boss, a chest containing a Silver Rupee will appear.

The first room contains Dinofols. The Great Fairy Sword will defeat them in a single hit.

The second room features a Wizrobe. It should pose little challenge with your current equipment.

The third room has Wart, a boss that requires a careful strategy to deal with its bubbles.

In the final room, you will face the Garo Master again. Use the strafe, counter, and defend tactics you learned previously.

After clearing all four rooms, speak to the Poe Collector. He will reward you with Piece of Heart #45.