On Evolve - Choose one. (1) Discard a card: Give your leader
+5. (2) Discard a non-
card: Select an enemy follower on the field and deal it 5 damage.
QIf I can't select an enemy follower on the field, can I still choose option 2 and have nothing happen?
ANo. If you can't select an enemy follower on the field, you must choose option 1. (You may decline to pay the cost, causing nothing to happen.)
QIf I have no Runecraft cards in my hand, can I still choose option 1?
AYes. However, as you would be unable to pay the cost, nothing would happen. The same would be true if you had no non-Runecraft cards in hand and chose option 2.