The major strength of this is that it allows the user to become a humanoid of rock and magma. This gives them a huge boost in strength and defense. Another strength is the user able to create and manipulate magma aswell as create shock waves like sengoku's Devil Fruit the Hito Hito no Mi, Model: Daibutsu. The major weakness of this fruit, is that it doesn't gain much of a speed boost because of the giant size of a cherufe. Other than this, the user suffers from the standard Devil Fruit weaknesses.