This spell is a part of the Influence spell chain and is found in the Influence rune stone.
The mind at rest moves effortlessly through its own space - thought to thought, intention to action, without friction or resistance. Most people never notice this because they have never experienced the alternative. The mentamancer knows better than to trivialize the mind and thought. They have sat with Nightmare and learned just how the mind can unravel, and through the mentamancer - Nightmare is happy to show everyone else why they should always safeguard and value their mind.
Mental Encumbrance reaches into the target through Nightmare and fills the space between thoughts with weight. There is no pain or confusion, instead it is something subtler and in many ways worse. The simple act of thinking becomes a strenuous task. Concentration that was automatic now requires work. The mental pathways that carry spells and skills from intention to expression feel suddenly narrow, congested, resistant. The target's Soul and Soul Maximum is cut in half as Nightmare saps the mental reserves needed to sustain complex thought, and spell and skill costs are doubled as every action that requires concentration demands twice the effort it should. Even the checks to use them carry an extra -1 penalty, the encumbered mind stumbling where it once moved freely. The target is not incapacitated. They can still think. They simply find, to their increasing frustration, that thinking has never felt so much like work. Those that come from this have renewed appreciation to the mind, just as the mentamancer wanted.
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