Blue Joy Ring
"Beasts drop double Hearts"
The Blue Joy Ring is a Magical Ring that Link can obtain in a Linked Game of Oracle of Ages. The ring can only be collected in Oracle of Seasons through the Ring Secret.
In Oracle of Seasons, the Blue Joy Ring can be acquired during a Linked Game. Princess Zelda will give Link a Seed Ring after he says him from the Great Moblin.
The Blue Joy Ring can also be acquired in a Linked Game of Oracle of Ages. After completing the Moonlit Grotto, enter the Black Tower where you will find an enemy Vire that is holding captive Princess Zelda. You will first need to climb up the various levels of the Black Tower, avoiding Fireballs as you make your way upwards. Once you reach the top and defeat Vire, Princess Zelda will reward you with the Seed Ring.
When equipped, the Blue Joy Ring will double the value of every Recovery Heart that is collected. This ring is valuable if you have a more reckless style of play and always need additional recovery hearts. However, there is are other good defensive rings, such as the Blue Ring or the Armor Ring L-1.
The Red Joy Ring is similar to the Blue Joy Ring, except that instead of effecting recovery hearts, it effects Rupees.