Mahakal Tattva
The supreme yantra of Goddess Lakshmi and Tripurasundari for ultimate peace, harmony and boundless prosperity.
"ॐ नमः शिवाय" (Om Namah Shivaya) or "ॐ त्र्यम्बकं यजामहे सुगन्धिं पुष्टिवर्धनम्"
For best results, wear after morning bath facing East or North on Monday or Shivratri.