Crazy Stone is a daily quest available at and above Level 30 from Hou Jenhsi in West Archosaur. It gives roughly 20% of a level's worth of XP at level 30, diminishing somewhat to closer to 13% in the late 50s. At level 61, the contact NPC changes to the nearby Tu Jo (25 feet east, closer to the high tower wall), and it remains Tujo until level 91, when Tu Heng, just north of Tu Jo, offers the quest. The best value for this quest is the levels 91-100, when the gem requirement remains Common gems, but the XP is considerably more. Crazy Stone cannot be canceled (Trash button is greyed out)