A commander's ring was a magic +2 ring that was made by the War Wizards of Cormyr for their military commanders. Three times a day each, the ring could produce the effects of daylight, feather fall, knock, and wall of force, but only when the correct command word was uttered. If a purple dragon ring was worn on the same hand as this ring, they were treated as one ring. The wearer was able to detect any purple dragon rings within 100 feet (30m), but this power of detection was blocked by stone, metal, wood, or other solid boundaries. These rings were worth around 120,000 gold pieces each.
In the Year of the Ageless One (1479 DR), Royal Magician Ganrahast Aeiulvana, Lord Warder Vainrence, former Royal Magician Vangerdahast Aeiulvana, and Storm Silverhand found a way to enchant the rings to safely allow telepathic communication through the team and commander's rings, a feat previously impossible due to the aftereffects of the Spellplague.