A sweep to get to mount from closed guard.
From closed guard break the opponents posture to force them to posture up. Sit up quickly and follow them as they sit up. You can sweep in either direction. If sweeping to your left post up with your left hand as you sit up. Get it close to your butt so you can sit up high. Reach across your opponent with your right hand, and behind their right arm. Trap it and prepare to roll to your left. Bump up with your hips to knock the opponent off balance, and look behind yourself as you roll. The roll should be tight and small, pulling the opponent with you rather than just trying to flip them.