Here is a doozy of a spell for a necromancer – to raise an entire bound area such as a graveyard as servants of the caster.
Raise Their Ancestors to Haunt Them
Rego Corpus / Mentem 45, R: Touch, D: Sun, T: Boundary, Ritual
Each human corpse in the bound area is animated under the command of the caster. The corpses can obey simple instructions and perform rudimentary work without supervision.
(Base 10, +1 Touch, +2 Sun, +4 Boundary, Mentem req free)