Magic Armor

The Wind Waker
In The Wind Waker, the Magic Armor appears as a kind of jewel or crystal (which somewhat resembles Din's Fire from Ocarina of Time). Upon use, a magical barrier will cover Link, protecting him from taking damage, similar to Nayru's Love. The Magic Armor slowly drains Link's magic power while active, and will simply stop working once Link's magic meter runs out. Link can even activate the shield while sailing for protection from attacks during sea battles.

The Magic Armor is given to Link by Zunari on Windfall Island, after completing the Island Trading Sequence. It's an optional item in the game.

Twilight Princess

 * ''See also: Magic Armor Sidequest

The Magic Armor is an item in Twilight Princess that Link can use to make himself invincible. With the lack of a magic bar in Twilight Princess, the Magic Armor drains Rupees very quickly (about two per second). When attacked, it will drain 12 Rupees. Once Link runs out of Rupees, the armor becomes very heavy, causing Link to move as if he has the Iron Boots equipped. If Link is out of Rupees when he equips this, Link can not get on Epona, and if Link equips it while riding Epona, Epona will stop, and Link will be sent flying off of Epona. He also sinks in water if he runs out of Rupees while swimming, forcing him to take the armor off or drown. The Magic Armor's design is similar to that of the crown and armor Princess Zelda wears, suggesting that the Royal Family had something to do with the making of the armor. Another possible connection to the Royal Family is the Triforce symbol near the bottom of the torso.

Once Link has donated to the Malo Mart Castle Town Branch, the Magic Armor will be available for purchase at 598 Rupees.

Trivia

 * In The Wind Waker, after you have finished the game and are wearing your normal island clothes for the second quest, the magic armor will still show the outline of Link's trademark hat even though he is not wearing it.