Ooh, I know this one!
Reboot the universe using a temporal stasis device and the psychic imprint of someone with the ability to resist the memory-altering effects of a cosmic retcon. This is, like, first year stuff at the Prydon Academy.
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"My name is Ezio Auditore da Firenze, and like my father before me, I am an accountant"
Nothing is true. Everything is tax-deductible