I was heading northeast turning onto 610 eastbound entrance ramp from maple grove parkway, noticed 6-8 low flying helicopters in semicircular formation heading from the east towards me, 3 seconds later noticed a pulsating light from below treeline approximately 300-500 ft to the east, the object then rises up almost above treeline and seems to tumble in place for 1 or 2 seconds before rising just above treeline, once the object was above the treeline the lights were more like a blinding white staggering strobe light with multiple locations, object slowly headed north for 2 seconds then seemed to jump eastwards towards brooklyn park almost out of sight then jump back and steadily moved from original eastward position in maple grove heading eastward again along hwy 610 towards brooklyn park/coon rapids until out of sight. the objects profile came into view for less than 3 seconds after last heading and seemed to have a thin, dumbbell shape with a transparent - gold color.....????While the sighting was unfolding the helicopters seemed disoriented and broke visible formation. it has been about 2 hours since sighting and i still can see burn in when i close my eyes, during and 10 seconds immediately after sighting i felt nauseous and had sunspot/flash like vision in both eyes. i feel relatively ok now.