The Reliquary of Tantal (Japanese: ルクスリア聖遺物宝物庫, Rukusuria Seiibutsu Hōmotsuko) is a Location in Xenoblade Chronicles 2. It is located at the bottom of a staircase on the north side of the Hall of Virtue in Theoscaldia Palace, Tantal. Opening the door to the Reliquary requires Lockpicking Lv.7 and Ancient Wisdom Lv.5 Field Skills.
Two Treasure Troves can be found inside the Reliquary. One contains a Nopon Doubloon and 8,900 G, the other contains an Alphabet Course+ and 2,760 G.