Obviv is a common throw in sambo. similar throws exist in wrestling and judo as well. the reason i label this as a variation is because of the over the back grip that is on the 'near' side of your opponents head causing both of your arms to be on the same side of him. i like this variation for a couple of reasons. first i feel that i have more lift. and second because their desire to take my back helps the rotation of the throw.
when trying this throw your opponent can get hurt! tell them to breath out when they hit the ground and to hug your body, as the desire to post will be common in most grapplers not used to these kinds of throws.
grab their sleeve and reach over their back with your other hand on the same side of their head as your other arm and grab their belt.
lace the same side leg that has the over the back grip and grapevine your leg around theirs on that side.
like a suplex, you need to push your hips into him and left up hard. do not turn until both of his feet are off the mat. use your wrapped leg to lift his leg up and pull up hard on the over the belt grip.
you need to arch your back and get him over you. once you do that, turn toward the side that has the leg wrapped and leap off the ground.
land on him hard. do not break your fall with your hands or your knees. you want all of your weight to land on his chest or head. if you do this right you could knock the wind out of him, or KO him. when doing this with your training partner, make sure he knows to breath out when he hits the mat and hugs your body so he doesn't post or land on his arms.