A ring of protection improves the wearer's Armor Class value and saving throws vs. all forms of attack. A ring +1 betters AC by 1 (say, from 10 to 9) and gives a bonus of+ 1 on saving throw die rolls. The magical properties of a ring of protection are cumulative with all other magical items of protection except as follows:
- The ring does not improve Armor Class if magical armor is worn, but it does add to saving throws.
- Multiple rings of protection operating on the same person, or in the same area, do not combine protection. Only one such ring—the strongest—functions, so a pair of protection rings +2 provides only +2 protection. To determine the value of a protection ring, use the following table:
| Roll | Level of Protection |
|---|---|
| 01-70 | +1 |
| 71-82 | +2 |
| 83 | +2, 5' radius protection |
| 84-90 | +3 |
| 91 | +3, 5' radius protection |
| 92-97 | +4 on AC, +2 to saving throws |
| 98-00 | +6 on AC, +1 to saving throws |
The radius bonus of 5 feet extends to all creatures within its circle, but applies only to their saving throws. (In other words, only the ring wearer gains Armor Class additions.)