The Prime Sources are starlight, moonlight and sunlight. A light leap may be performed by harnessing all three Sources at the Point of Purity, a special point in the atmosphere. Sunlight can be identified by a warm tingle, like the one on a summer day. Moonlight is like the soft calm on a clear evening, lingering in the quietest places. Starlight is varied, and will only provide a little light until you draw on the power.