When a gear card adds power to a unit, does the power only last for the turn or is it taken from the rune deck?

Ruling: Gear cards (Seals) are exhausted to generate Power, which is done by recycling a rune (not taking from the rune deck). If a card were to add a new rune from your rune deck, it would say "Channel a rune".

Nuances:

• Gear goes to the base, not on units
• Any unused generated resource lasts until either the next draw step or end of turn