162. The Rune Pool is a conceptual collection of a player's available Energy and Power available to pay Costs.
162.1. When a card adds Energy or Power, it is added to the controlling player's Rune Pool .
162.2. Players must first add Energy and Power to their Rune Pool in order to be able to spend it to play cards or pay for Abilities with costs.
162.3. Energy and Power do not have a physical marker or tracker, although players may wish to use a physical tracker if they are retaining unspent Energy and Power over the course of their turn.