This form is a little different from the others instead of touching the element this form is Trigon's last chance to survive when Trigon dies after a while he becomes this form, While he is dead his fire becomes extinguished and becomes dead dried skin. His only way back to true life is if Cyber and Ceasor work together to give blood to each head from the dragon who k.illed him, While he is undead he can control the undead and reform if destroyed (much like Dry Bones)
#TrigonsForms