Bob Beamon’s Sand Pit

Origin
Bob Beamon is an American former track and field athlete, best known for his world record in the long jump at the Mexico Olympics in 1968, which remained the world record for 22 years, 316 days until it was broken in 1991 by Mike Powell. He entered the Olympics as the favorite and unknowingly broke the world record, as he was unfamiliar with the distances announced in metric form. When he was told the distance, he suffered muscular failure from the emotional shock and fell to his knees. His competitors later helped him back up to his feet.

Effects
The sand will vibrate whenever something is moving nearby. It will activate whenever an object or person appears over it. The sand will coalesce into one large force and push the object/person a far distance away from the starting point. Users will suffer from brief periods of weakness afterwards where they will have difficulty standing and moving.