Armageddon
In every universe, there is a doorway that is similar to a blackhole. You may think of this doorway, the end of existence. Its gravitational force is so strong that it sucks the entire universe into it, end life and end creation with empty black space. No more stars no more galaxies.
Universal Gods, use these doors to remove dark energy and dark matter when loves ceases to exist to reignite a new universal structure.