Thorns

+1

+2

+1

+1

+1

+1

+2

+1

• The tablet sits in the outlined slot.
• +N raises an artifact's level

Rule: LEFT 1 · RIGHT 1 · DOWN 2 · UP 2 · DIAUPRIGHT 1 · DIAUPLEFT 1 · DIADOWNRIGHT 1 · DIADOWNLEFT 1