Golden Sage

After Link defeats all four Golden Monsters in The Legend of Zelda: Oracle of Seasons, he will need to go to the Golden Sage to get a ring. This ring, after being appraised, is the Red Ring. To find him Link will need to go to where the first dungeon, the Gnarled Root Dungeon, is, during Summer. Climb down the stairs to where the river would be. Instead the water will be drained, due to it being Summer, and Link will be able to go down the stairs where he will find the Golden Sage sitting. There is no other purpose for him besides getting the Red Ring.