Many varieties of this ring exist, but most are simply plain, gold bands. There are three broad categories of ring of familiar power–standard, greater, and supreme. Each ring bears the power of a certain familiar ability, from any class list to which the creator has access –standard, greater, or supreme, depending on the type of ring. While a character is wearing one of these rings, all of his familiars gain the benefit of the familiar ability it supplies.
Price 4,000 gp (Standard), 16,000 gp (Improved), 32,000 gp (Supreme).
Familiars & Companions, Copyright 2017, Troll Lord Games; Author Casey Christofferson, Justin Bacon, Tommy Ruteledge, Josh Hubbel, Lance Hawvermile, Luke Johnson, Stephen Vogel and Dave Zenz.