The idea of a trickster being helpful in a dream is indicative of someone being able to overcome fear and be proactive in their life. The trickster will help the person by taking risks, which are often unknown and may have potential risks that they must overcome to succeed.
Also, a trickster in a dream symbolizes for an individual that they need to rethink and advance their current way of thinking. It is not the old plan or program that will lead to a successful future.