Mordekaiser's Return to Runeterra

After the tribes of Noxus and Le Blanc's aided betrayal of the Iron Revenant he was sealed away into Mitna Rachnun. This had been to his plan as he had once built his mortal seat of power the Immortal Bastion so to did he build his kingdom in the realm beyond life, this time he had help, as all that he had killed in t...