If youre the usurer, this usually means failure and ruin. On the other hand, if you are the one who needs a usurer, it is also a bad omen and a warning to be prepared to go through an unpleasant situation which will cause shame.
Dream dictionary: Usurer dream meanings
…To find yourself a usurer in your dreams, foretells that you will be treated with coldness by your associates, and your business will decline to your consternation. If others are usurers, you will discard some former friend on account of treachery….
Announces opposite circumstances to your hopes that will make you look for support on people who are wishing to see you fail in your activities.
Being usurer means ruin. Turn to usury means upcoming embarrassment. The thing is not so easy.