The Deliverance Engine allows you to spread culture remotely and very rapidly. Culture does the following:
- On planets you control where your culture is dominant, you get an Allegiance bonus. This means you get more income from that planet.
- On planets your enemy controls where your culture is dominant, the enemy suffers an Allegiance penalty. This means they get less income from that planet.
- If a planet's Allegiance reaches zero, it will rebel against its owners and become neutral.
- A neutral planet where one player's culture is dominant can only be colonized by that player.
- The Advent can research technologies that give their ships a shield bonus when fighting in areas where their culture is dominant.
- The Advent can research an upgrade that allows them to see any area where their culture is dominant as if they had a ship there.
So the effects of the Deliverance Engine are subtler than the other superweapons, but it should not be underestimated.