The Monster has a lot of magic artifacts stockpiled over the place. Not all of them are on him. The more times you come back after being irreversably killed, the more times I do.

The Monster comes back. The Monster blinks, and everyone feels... strange. The Monster used Ancient Magic: Mass Mind Influence!
Atamos reverses all the backups he ever made, and influences time to make sure he will never come back if he dies!
The Interceptor II uses EMP cannon on the Rainbow Ship!
The Monster uses Paradox Attack on Atamos (he mind influenced minself)!
With no more backups, Atamos is gone and will never come back!
The Spirit uses Ancient Magic: Influence (you never posted a spell list for it, so I can have it do whatever spells I want it to)! The Monster uses Paradox Attack on the Spirit!
With no more backups, the Spirit is gone and will never come back!
Everyone else is too stunned to do anything!

See, this is my counter to you using Atamos to counter me using Paradox Attack to counter you getting a semi-immortal on your side to counter me having a semi-immortal who is not on my side.