This spell is a part of the Transference spell chain and is found in the Transference rune stone.
There is a place where Dream and Nightmare both originate - the space beneath waking thought where the mind goes when the body sleeps. Most people visit it nightly without ever being truly aware of where they are. Transcending Space sends a target there while they are fully, helplessly conscious.
The mentimancer reaches through both Dream and Nightmare simultaneously, finding the thin place between waking reality and the dream space that underlies it, and tears just enough of an opening to push a single target through. The target's body remains - present, standing, alive - while everything that makes them a conscious being is pulled into the space where dreams are made and nightmares live. What they experience there cannot be described in waking language. Dream and Nightmare receive them according to their nature, and the target has no say in which takes precedence.
They return when the duration ends, or immediately, if the mentimancer sends another target through and the opening can only hold one at a time. While their consciousness is within the dream space their body remains like an unwavering statue. They return to their body stunned for 1d4 rounds, the mind needing time to reconcile what it just experienced with the reality it has come back to. For the round after the stun lifts, spells and skills remain beyond them - the waking mind not yet fully back in command of the dreaming one. Should they be killed while their consciousness is away, forever will their consciousness be trapped in the dream space - waiting hopefully for someone with a resurrection spell that can defy all laws of reality. The target is left in whatever shape they were in. Dream and Nightmare do not repair, nor are they harming their guest. They only show what was within them all this time.
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