Magma.

About Magma

Magma is a superhero appearing in American comic books published by Marvel Comics. Created by writer Chris Claremont, and artists Sal Buscema, Glynis Wein, and Bob McLeod, the character first appeared in The New Mutants #8. Amara Aquilla belongs to the subspecies of humans called mutants, who are born with superhuman abilities. Amara is also known as Allison Crestmere, an identity she assumed after her memory was altered. She possesses the power to manipulate magma and earth, and can turn into a magmatic form.