House Thuranni is an elven dragonmarked house throughout Khorvaire that was once part of House Phiarlan, but broke away from them during the Last War. Now they compete directly with Phiarlan, operating out of the Lhazaar Principalities with small enclaves in major cities across Khorvaire. The house first appeared in 972 YK, when a group of elves split off from House Phiarlan.
House Thuranni possesses the Mark of Shadow. Though still weaker as a house than Phiarlan, Thuranni is still a competent player in the game of espionage, sabotage and intrigue especially when one wants to dig up information about Phiarlan.