Apocaalypse mod idea (srry to the Christians)

[Nexus Of Chaos]

My idea is there's an item titled "Ritualistic Cutting Blade" with exactly 666 summon damage (does not spawn a summon, you'll see why) has complete armor pierce, and 666 usetime (yes this will freeze the player if they have a god mode mod on). When used, it instantly kills the player with the message "Hell is rising..." which first has the underworld spread like the corruption, crimson, and hallow, and second, after the player respawns, starts an invasion with the message "The Apocalypse has begun!"

this is as far as I hav got with this idea