When using Dances Up Earthquakes' third growth option, can you pick the same impending card twice? Can you gain extra Energy onto one impending card and less Energy onto another impending card?

When using Dances Up Earthquakes' third growth option, can you pick the same impending card twice? Can you gain extra Energy onto one impending card and less Energy onto another impending card?

No and yes, respectively. You first choose which 0-2 cards you're going to affect and then separately decide which of the chosen cards (if any) will gain +1 Energy and which (if any) will gain -1 Energy when you gain Energy later that Spirit Phase.