A creature attuned to and wearing a ring of warmth was not bothered by ambient temperatures as low as −50 ℉ (−46 ℃) with no need for cold weather gear or clothing, as a result of the additional body heat magically generated by the ring. In addition, any items carried or worn by the wearer were also immune to those low temperatures. The ring also offered considerable protection against magical cold, greatly reducing any damage taken by the wearer from a cold source.
By the Year of Three Ships Sailing, 1492 DR,[note 1] a ring of warmth dating from the time of the Delzoun dwarves was located in a forgotten chamber of the Vault of Dragons beneath Waterdeep, together with other treasures and dwarven relics.
A pair of rings of warmth were kept in the kitchen of the House of the Moon temple of Selûne in Waterdeep circa 1370 DR. These were used to safely enter the refrigerated pantry, which was kept chilly by a brown mold. One ring was worn by senior priest on duty, the other kept on a hook by the door.
- Dugal Buchannan
- Canon material does not provide a year for the events described in Waterdeep: Dragon Heist, but Christopher Perkins answered a question via Twitter and stated the year was 1492 DR. Corroborating this, Dragon Heist page 20 refers to events of Death Masks (set in 1491 DR) as being "last year". Unless a canon source contradicts this assertion, this wiki will use 1492 DR for events related to this sourcebook and Waterdeep: Dungeon of the Mad Mage (which is referenced on pages 5 and 98 of Dragon Heist).
- Gary Gygax (1979). Dungeon Masters Guide 1st edition. (TSR, Inc.), pp. 131, 227. ISBN 0-9356-9602-4.
- Gary Gygax (1979). Dungeon Masters Guide 1st edition. (TSR, Inc.), p. 122. ISBN 0-9356-9602-4.
- Mike Mearls, Jeremy Crawford, Christopher Perkins, James Wyatt (2014). Dungeon Master's Guide 5th edition. (Wizards of the Coast), p. 193. ISBN 978-0786965622.
- David Cook (April 1995). Dungeon Master Guide 2nd edition (revised). (TSR, Inc.), p. 203. ISBN 978-0786903283.
- Christopher Perkins, James Haeck, James Introcaso, Adam Lee, Matthew Sernett (September 2018). Waterdeep: Dragon Heist. Edited by Jeremy Crawford. (Wizards of the Coast), p. 96. ISBN 978-0-7869-6625-7.
- Eric L. Boyd (September 1997). Powers & Pantheons. Edited by Julia Martin. (TSR, Inc.), p. 160. ISBN 978-0786906574.
- Jim Dawson and John Miller (November 1990). “The Living City: Black Dugal's Music Shoppe”. In Jean Rabe ed. Polyhedron #56 (TSR, Inc.), p. 24.