Legendary Super Saiyan 
is a unique transformation, only granted to those with the Legendary Trait. LSSJ's unlock requirements are the same as Super Saiyan 2.
Your damage and speed are increased by 130% and you get 65% more damage for non-Ki weapons, while in this form. However, on the downside, your Ki is drained at the rate of -130Ki/s, and you lose 215% more Ki per attack. the cost of your attack's Ki usage. This form has no mastery. As a Legendary Super Saiyan, your hair becomes green and considerably more spiky than Super Saiyan 1, and your aura becomes a green color. Green lightning also generates around your character akin to Super Saiyan 2 and Super Saiyan 3.
Note that as a Legendary Super Saiyan, you will not be able to attain Super Saiyan 2 or Super Saiyan 3. However, Super Saiyan 1 and its masteries can still be attained.
See Mastery
Trivia
- Users of this form show great aggression to one being, to the point of rage and destruction. However, after getting used to the form the user is able to get rid of this aggression, as shown in Kale and Broly.