It would be more logical to make this effect similar to "Plague," as it's not very effective at higher levels.

Of course, but there are three points to consider:
- The rest of the Darkness faction is still strong, regardless of the game stage.
- It's impossible to create a mass version, at least for online play.
- We would have to swap their positions, which would generally strengthen the Darkness school in the late game, making it even stronger.

As a fellow player pointed out, I haven't really done anything new; I've just reversed the old effect. It was unexpected that it couldn't be applied multiple times, but essentially, it's still raising the dead. Besides, it works well for the late game for the Nature faction.
Hmm... and I haven't even tested the Wizard's spell...