I don't just raise the dead, I control them. It's come in very handy. I can raise my own armies.
[Admittedly, the lake was a tactical choice. Sector 6 is a dangerous place, and being near water with someone who can use water as weapon just made sense. Still, Nico is in no hurry to get to it. The dead things, however, are also near here, and he is eager to get to those.
As they get closer, he can even see what appears to be bones sticking up from the ground. Ribs, maybe? Awesome.]