Can you pre-tap runes on your opponent's turn to float energy/power for later use in that turn?

Ruling: Yes, you can pre-tap runes on your opponent's turn to float energy and power in your rune pool.

Nuances:

• Your rune pool empties at the end of each draw phase and at the end of each turn
• This allows you to pre-tap runes before an opponent's action (like Divine Judgment or starting a showdown) and use that floated energy/power to respond during the same turn