Ganda is the 10th Nitya (Naisargika) Yoga, which is ruled by Agni and considered to be malefic one (especially first 6 Ghatis of it). It is one of 7 other malefic Yogas of lower order (comparing to Vyatipata and Vaidhriti which are considered malefic Yogas of higher order), and its effect can be described as "knot", "obstacles". shani is a Graha, who's ruling Ganda.
A person with this Yoga is rich, proud, aggressive and loves disputes. Native has a destructive mind, is inclined towards hypocrisy and troubles his mother. Native may suffer from ailments related to the throat. The native has large hands and feet. The person has a large chin. Those born in the final stage of Atiganda Yoga destroys the family’s reputation.