Link, Courageous Youth

Vigilance
Partner with Navi, Appointed Guide
When Link, Courageous Youth becomes equipped with The Master Sword, transform Link, Courageous Youth.
When Link, Courageous Youth attacks, if you are in a dungeon, venture into the dungeon.
{w}{w}, {t}, Unattach target equipment from Link, Courageous Youth: Attach another target equipment to Link, Courageous Youth.
{g}{g}, {t}: Search your library for a legendary land card, reveal it, put it into your hand, then shuffle.