Part of designing a high powered Magus for Ars Magica is working out what effects they might have personally developed which separates them from the wizards in the core rulebooks. These two effects use the mind control arts of Rego Mentem to the high level without being a ritual; to command a person utterly, and to issue a command to everyone within a building. The magus who will hopefully design these spells can also use Vim magic to target the spells using Arcane Connections and across battlefields.
Dominion of Thought, Word, and Deed
Rego Mentem 50, R: Eye, D: Moon, T: Individual.
This effect allows the caster to mentally dominates the subject, completely controlling their mind, objectives, and emotions. Complex intertwined motivations, behaviours, and attitudes can be planted in the subjects mind; which they must act upon.
(Base 30, +1 Eye, +3 Moon)
Compelling the Inhabitants Compliance
Rego Mentem 50, R: Touch, D: Sun, T: Structure.
Mentally commands all inhabitants of the target structure to perform a single complex command, regardless of its danger or suitability, which they must carry out to the best of their ability.
(Base 20, +1 Touch, +2 Sun, +3 Structure)
For these and other new Ars Magics spells see the list of spells.