Been in several Rift games now, spark has only been dunked twice. When both teams are relatively evenly matched, it becomes almost impossible for either team to get the spark runner to the rift. Rift basically turns into Clash. Maybe change it to make it easier for the team with the spark? I'd suggest implementing some kind of passing mechanic. Also, extend the duration of the spark and have the spark remain behind upon death so other players (of either team) can pick it up.