If Flooding has no blocked card at the end of the round, can you destroy it alone, and can the two-card option use any friendly cards?

Question

Accepted Answer

No, you cannot destroy it alone. With no blocked card to take, you must use the option that destroys Flooding with two other friendly cards, and those can be any two friendly cards, not only buildings.

Kingdom Legacy: Feudal Kingdom

If Flooding has no blocked card at the end of the round, can you destroy it alone, and can the two-card option use any friendly cards?