The Legend of Zelda: Oracle of Seasons/Golden Monsters

There is said that a mysterious gold-cloaked sage resides somewhere in Holodrum, and has made the monsters appear. He eagerly awaits a person worthy of his treasure, and knows when each of his monsters have been slain. If you feel up to his challenge, then it's time to hunt the Golden Beasts!

Golden Beast #1: Golden Soldier
Requirements
 * Obtain the Power of Spring

This monster can be found east of the Heroes Cave.

Golden Beast #2: Golden Octorok
Requirements Enter the far northwestern corner of Spool Swamp to find another Golden Beast, the Golden Octorok, an Octorok that shoots chunks of pure gold. This one will be rather tricky to defeat, because you can't knock it down a hole. Instead, you must tackle it the hard way with your sword. When it's gone, that's two down!
 * Obtain the Power of Summer

Golden Beast #3: Golden Moblin
Requirements
 * Obtain the Power of Fall

Head back over to the entrance of Snakes Remains and make it fall. You'll find a Moblin has appeared, except he's gold! He is one of the four Golden Beasts, and is incredibly tough to battle. If you have low-level items, it will be a long, grueling fight.

It will take a lot of sword strikes to defeat him. When you do, he will disappear for good. Now, for the next one!

Golden Beast #4: Golden Wolf
Requirements
 * Obtain the Power of Winter

Can be found in the Ancient Ruins in the Winter.

After you've killed all four of the Golden Beasts, head back to the sage to collect your reward, the Red Ring, a ring that doubles sword damage without increasing the enemy's health.