There were mainly two ways to Bridge into Knightmare;
One would have to succumb to Morgander's Gaze of Slumber, which would throw them into a deep sleep and capture their conscience, dragging it into the world of Knightmare.
Or, one would attain a moonflame flower, chew on its petals with a companion who could either be a Traveler Mage or a Portalist. They will both fall into a deep sleep and their consciences will be present in the same dream space. Then, the Traveler Mage or Portalist will create a Bridge that leads straight into Knightmare.
Complicated, yes. Much more complicated than the other Expanded Realms, but that is what Morgander's powers granted her.
For Daligarth, he did not require a companion to Bridge him into the Expanded Realm as he had already climbed the Ranks of a Mage at that point in his illustrious life.
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