With strong enough teleportation you could take over the planet on threat of sending it into the sun, not even the strongest heros able too stop that unless they have the right version of time travel (cause realisticly if one person has a power then their will be others) then get a way too stop ageing and overcome the brains limits and finnaly turn the planet into a utopia by abuseint physics. Your own perfect world where you decide the fate of be it unitement or constant war.