Crest of the Rat, Dark Souls Wiki

The Crest of the Rat is a ring in Dark Souls II. Given to the player by the Rat King after joining the Rat King covenant. Wearing this ring in the Grave of Saints or the Doors of Pharros will summon other players into the host's world. The player can be hollow or human for the summoning to work. Once other players are in the host's world when summoned this way, the Crest of the Rat cannot be taken off until they depart. It can also grant a flat bonus to the Poison buildup stat on poison weapons

Black Knight - Dark Souls Guide - IGN

Sen's Fortress Dark Souls Wiki

Slumbering Dragoncrest Ring (Dark Souls II), Dark Souls Wiki

Steam Community :: Guide :: Covenants and what they do for you!

Undead Rat - Dark Souls Guide - IGN

Seath the Scaleless - Dark Souls Wiki

Hawkeye Gough - Dark Souls Wiki - Neoseeker

Royal Rat Authority, Dark Souls Wiki

Gower's Ring of Protection, Dark Souls Wiki

Steam Community :: Guide :: 100% Achievement Guide: Dark Souls - Remastered

Category:Dark Souls II: Rings, Dark Souls Wiki