Armor Ring L-1
"Sword damage -1, Damage taken -1"
The Armor Ring L-1 is a Magical Ring that Link can obtain in Oracle of Ages. It can be found inside of Great Moblin's Keep in the Present. When you first enter the Great Moblin's Keep, the ground will crumble below you. Fall down to the floor below. Swim through the side-scrolling area and climb up the ladder above the water. This leads to a room that contains a Treasure Chest containing the Seed Ring.
If you've already defeated the Great Moblin, you can simply head down the staircase to the left where the tower once stood to reach the same side-scrolling area.
The Armor Ring L-1 is the opposite of the Power Ring L-1 and it is another trade-off ring. When worn it will lower Link's sword damage by one unit and also lowers the damage he takes by one unit. It is useful if you aren't too concerned with battling enemies and are quickly running passed them.