Guardian Acorn

Guardian Acorn are small, golden acorns, that are occasionally dropped by enemies in Link's Awakening. When Link touches one, the acorn halves all guard against the damage Link takes for a certain amount of hits. The duration is only denoted by unique music. It is one of two temporary upgrades available in Link's Awakening, the other being Piece of Power. The Blue Tunic obtainable in the Color Dungeon exclusive to Link's Awakening DX has the same effect, but is permanent.

In The Legend of Zelda and A Link to the Past, the Blue Ring and the Red Mail has the same effect as this item, respectively.