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a person could realistically wear up 2-3 rings on a single finger although it would realistically affect a person's grip... thus i propose a skill which would allow a character to wear 5 to 8 rings per hand by improving the character's hand eye coordination and grip...

Realistically, sure. But this game isn't real. There is a much bigger issue of game balance. One ring can potentially raise your attributes by about 4 character levels (20 points), plus charms. If you were wearing 10 rings, that would make your character 40 levels higher by the end of the game. That's would almost double what most people managed at the end of Divine Divinity!

The game becomes a lot more interesting when you have to choose over the Ring of Demi-Immortality and the Ring of Elemental Immunity. Both very nice, but you can only have one!