YOU SAID:

a house of cards will fall if you blow on it and destroy a civilization below

INTO JAPANESE

あなたがそれに吹き飛ばし、下の文明を破壊する場合、カードの家が落ちる

BACK INTO ENGLISH

If you blow it away and destroy the civilization below, the house of cards will fall

INTO JAPANESE

あなたはそれを吹き飛ばし、下の文明を破壊する場合は、カードの家が落ちるでしょう

BACK INTO ENGLISH

If you blow it away and destroy the civilization below, the house of cards will fall