Is Bestow Curse Spell Good Or Evil?

[RatElemental]

Err... It's usually "barely restrained" by the fact that it will do nothing whatsoever for eternity unless explicitly commanded to do something, and it will continue doing that thing forever unless commanded otherwise.

Eeeeeevil, I tell you!

Well it does depend on DM a bit, but one of the raw ways to play a mindless uncontrolled undead is that they wander in search of life to destroy, and then destroy it, until they are themselves destroyed.

The other way to play them is they just keep doing whatever they were doing forever. So the skeleton chopping wood clear cuts the forest, and the zombie plowing the fields uproots the entire valley.