Blue Holy Ring
"No damage from Zora's fire"
The Red Luck Ring is a Magical Ring that Link can obtain 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. He can also acquire it in a Seed Ring form by bumping into Maple. The ring can also be obtained through a Fortune Link at Vasu's jewelry store.
In Oracle of Ages, the Red Luck Ring is one of the many rings Link can acquire in the Lynna Village Shooting Gallery. The mini-game costs 10 Rupees to play. If Link scores 350 or more points, he will earn a Seed Ring as his reward. Several different rings are available as a reward, including the Red Luck Ring.
When equipped, the Blue Holy Ring causes Link to be immune to the fireballs that are spit out from River Zora enemies. Considering that River Zoras are only found in water based areas and their attacks aren't too hard to avoid, this ring is not very effective. Other defensive rings are more effective, such as the Red Ring or the Armor Ring L-1. If you have the L-2 Ring Box or the L-3 Ring Box, you can keep the Blue Holy Ring stored, but it is unwise to have it equipped unless you are on a screen with River Zora.