The Helm of Domination and Frostmourne originated in the Maw.
Somehow Kiljaeden got the Sword and the Armor...
Arthas became the The Lichking
Arthas only died because deus ex miracle of the Light
The Light and the Void tried before invade the shadowlands
Kiljaeden was a pawn
The Jailer had too be directly responsible for the events
Jailer->Frostmourne->arthas->sylvanas->deal-breaking the helm of domination->shadowlands
But where „the light“ god i hate this deus ex things... the light miracle ultimately defeating Arthas.
Where The Light fits into it.
Jailer->Frostmourne/Helm of Domination->arthas->sylvanas->Arthas death->gay bolvar lichking->sylvanas second death->deal>breaking the helm of domination>shadowlands
Without the intervention of the Light there would no be breaking the Helm of Domination.
So going to first place when jailer orchestred all things...how could the Jailer know the light will „intervene“ causing in the end that sylvanas had the possibility Too destroy the helm.
And what the Light did deus ex?
Reveal in a future expansion? That after we return from Shadowlands and get a bridge expansion, that without the events of shadowlands wich the light is indirectly responsible for even happeneing the current expansion 2030 XD would not be possible.