We know about new Sion's passive, but does it exist within the setting?
What if....Sion can raise himself up, and enter a berserker rage at the end of which he goes back to his normal undead self?
What if he is literally indestructible?
The Law of Thermodynamics loathes to be broken by so simple a means.
In other words, his corporeal components will eventually burn themselves out without a greater influx to sustain them. We see this in the game itself, where the inner furnace fire begins to burn hotter and hotter. He does eventually just burn himself out and fall over dead. Presumably, outside magic becomes necessary resurrect him.
Mordekaiser, the nearest analog to 'indestructible', still has an Achilles's Heel. If his bones are ever destroyed, the ritual binding him to existence will break, and he will cease to exist.
you can cut his legs or something like that... even as undead, his body still human... kinda.
or destroy the furnance
I think he'll need his head to operate. Remove it and you may be golden.
I guess he'd still die at the end of his rage,but they might be able to simply raise him again.
