Nature includes:
Tormentor, thug, liar, cheater, revolutionary, never satisfied, duality- good and bad, suddeness in action like lion who hunts and lazes by moving slow
With Mercury:
Wit, verastility, quickness, communication
Contrast to mercury it is Intuitive part of intellect
With Mars:
Becomes nore aggressive, Revolutionary
With Jupiter:
Wastes energy as Rahu is lawless and Jup is Law
With Sun:
It is artificial of sun, Strong enemy of Sun
With Moon:
Negative Moon, illusion, paranoia
With Saturn:
Rahu is Saturn but is sudden in nature
You may want to have a look:
Divination - Astrology, Tarot, Oracle..... 