FusionDex

The only parts of Magrem's body that can cool and solidify into stone are the sections where it blasts out hot flames. The rest is made of hot, bubbling magma that is under constant threat of spilling from its body if it unleashes an attack.

It generates a powerful, freezing energy inside itself, but its body became frozen when the energy leaked out. The shell on its back is made of hardened magma.