Here we have a match-up of two species-devouring races in the Wraith from Stargate up against the Magog World Ship from Andromeda.
The Wraith fleet will be as it was at the beginning of Stargate Atlantis, with the sole exception of it having one ZPM-powered Hive Ship. And the Magog World Ship is as it was at the beginning of Andromeda.
Both sides are transported to the void between two random galaxies. The Wraith Fleet will start off 100,000 km away from the Magog World Ship. The Magog can win simply by destroying all the Wraith ships, while the Wraith Fleet must either cull or kill 80% of the Magog. The Wraith are informed that the Magog number in the trillions.