Skull Ring

The Skull Ring (called the Ring of Varda in the North American versions of Symphony of the Night with a reference to the Tolkein "one ring to rule them all) is a Gold Ring with a Skull on it in Castlevania that increases many stats greatly. In Castlevania: Symphony of the Night, it increases Attack by 40, Strength by 30, Intelligence by 20, Defence by 14, Constitution by 10, and Luck by 5.  It is a scaled up version of the Ring of Feanor, which increases each stat to a lesser degree without the same relative emphasis on each.