50 ft. measure, yellow markers
Mark an area with a 50 ft. radius, repeat x20 "May all forms of magic forsake this place."
No magic of any kind will work within the circle, though enchantments will reappear when removed from the affected area.
Dispel Magic, if cast from outside the sphere of influence, will remove Anti-Magic.
 Who gets it?
A 3rd level Wizard spell.