Magnus passed a Warp Magic spell to the Great Devourer, then severed the connection. The vast Thousand Sons fleet did not linger either. It opened a Portal and left the Octaria System.
After they departed in what was practically a rout, the Crystal Maze shattered with a thunderous crash. The influx of Tyranid Fleets had overwhelmed it.
None of that mattered much anymore. The enemy had escaped, leaving only the Great Devourer hesitating over the Warp Magic it had received.
Tzeentch's apostles certainly could not be trusted, but the Warp spell they had provided was highly viable. The Great Devourer's understanding of the Warp ran deep enough for it to see that the spell was entirely clean, without even the slightest trap.
Given Tzeentch's nature, he would never explain why. To use it or not? The choice lay with the Great Devourer. Nor was the Great Devourer alone in its confusion. Magnus could not understand why the great God of Wisdom had made him take such an enormous risk for such a trivial task... The Tyranids had no souls and were enemies of Chaos. All he could say was that the God of Wisdom's wisdom was unfathomable.
After running the calculations over a hundred times with its Calculation Units, even burning out some of them in the process, the Great Devourer decided to use this Warp Magic.
Just as Magnus had said, it was running out of time in the Battle of Octarius.
The Screw Clan had already reached the Tarrok System. If they reached Octaria and joined forces with the Ork Great Warboss, the Tyranid Swarm would undoubtedly lose.
Tzeentch's schemes needed time to brew, while the crisis in realspace would erupt very soon. The Great Devourer immediately arranged its next attack, with casting the Warp Magic as its