Castelo de Areia rare has a chance to spawn after opening Ba Brilhante. Glimmering Chests are found by using Pedra Divinat ria anywhere in Nazjatar. You can get Pedra Divinat ria from killing other rares or opening Arcane Chests. Check my post for all Arcane Chest locations Trove Tracker Has a chance to drop Guardareia