Blue Luck Ring
"1/2 damage from beams"
The Blue Luck Ring is a Magical Ring that Link acquires in Oracle of Seasons and Oracle of Ages. In both Oracle of Seasons and Oracle of Ages, Link can acquire the ring by planting a Gasha Seed and finding it within a Gasha Nut. Link can also acquire it in a Seed Ring form by bumping into Maple. The ring can also be acquired through a Fortune Link at Vasu's jewelry store.
In Oracle of Ages, the Blue Luck Ring can be found within a Cave in the Present. Navigate to the very west end of the Overworld, traveling one screen north of Jabu-Jabu's Belly to find a cracked wall. Place a Bomb to explode open the entrance and head inside. Using the Power Glove, lift up the Sarcophagus Statues in the room, in which a Treasure Chest can be found underneath the one on the left. A Seed Ring can be found inside, which becomes the Blue Luck Ring after being appraised.
When equipped, the Blue Luck Ring cuts the damage done by beams in half. Since there are very few enemies that attack like this, this is not considered a very useful Ring. Even the enemies that do attack this way, such as Beamos, are not too common. There are significantly better defensive rings that Link acquires in the game, including the Blue Ring or the Armor Ring L-1.