Goddess Wall

A Goddess Wall is a sacred image that is featured in Skyward Sword. It can be drawn on with Link's sword after performing a Skyward Strike to generate various items.

Appearance
Goddess Walls are invisible at first, and can only be found by playing the Goddess Harp near a wall where three Blessed Butterflies are congregating. Once revealed, a Goddess Wall appears as an ornately carved indigo rectangle, with the crest of Hylia in its center.

Features
After charging a Skyward Strike, Link is able to draw on the Goddess Wall with his sword. Link can draw six different shapes in order to receive unique prizes; a cardoid creates a mass of Recovery Hearts, a hexagon creates a trove of Rupees, a circle creates fifteen Bombs, an arrow creates fifteen Arrows, a Triforce creates three Fairies, and anything else creates three Recovery Hearts.

Once used, a Goddess Wall goes inactive until the player quits and restarts the game.