"Another one down, four more to go. No wait, five, if I add that guy who escaped as soon as they got here," The old man muttered to himself.
The bead was spinning continuously while absorbing all the blood that was coming from the people who died. Although all of them died from flames, the old man controlled the flames so well that they didn't burn the blood.
An Elementalist's control of their elements improves significantly after they get to the Overlord Plane. Breaking through to the Overlord Plane is like shedding to Elementalists, that's when they get a deeper and more profound understanding of the elements. This is one of the reasons an Overlord Plane Elementalist could easily seize control of the attacks of those in the Origin Plane.
The old man waved his hand, and a wall made entirely of lava appeared, blocking all the attacks of the group who attacked him.
All the attacks came to a halt, not moving an inch forward.