Can you recycle an exhausted rune to pay for a card's Power cost?

Ruling: Yes, you can recycle exhausted runes to pay for a card's Power cost.

Sequence:

• Exhaust one rune of any color to pay the energy cost
• Exhaust another rune that matches the required color
• Recycle that same exhausted colored rune to pay for the Power cost

Nuances:

• A card's color is defined by the small symbol in the bottom right of the card, not by visual design elements like banners