Possible Clues:

• Commonplace to find sodium in a laboratory back then
• Boring or trivial
• Not 'wow'-worthy
• Overused
• Obviously, that's a heathen god around the North
• To rusticate a student is commonplace
• Commonplace to forbid a first lover
• There's nothing interesting in having a heathen 21 down around the North
• There's nothing original in having an idol around the North
• The North in the idol merely makes it trite