Attractors/Chaos theory is not really something that you can 'encapsulate' in an indicator per se.. it is more of a higher level representation that can give a better picture of how chaotic/nonlinear systems behave in general. If you understand that 'general' behavior you will be able to use any indicator more effectively (or trade without indicators) as you will know what patterns/signals to look for.
Of course its not necessary to understand anything about chaos theory to intuitively understand market dynamics (which is ultimately whats important). It is possible to gain a similar level of understanding through thousands of hours of dedicated screen time watching and studying different markets. Either way the key is to have an understanding of what kind of things you are looking for in advance.