R'ashaht Rhiki is a npc available for Triple Triad matches added in patch 2.51. She is located at Limsa Lominsa Upper Decks (13.1, 12.8). To challenge her the player needs to complete the Main Scenario QuestFor Coin and Country.
The matches have the Match Rules Same and Plus. The possible rewards for defeating her are Merlwyb Bloefhiswyn Card, Leviathan Card, and Y'shtola Card.