Stalwart Wall

From PathfinderWiki

Long ago, the archmage Nex carried out his first experiments in planar binding and transformation in the interior of Valkus Isle, just off the coast of Nex. They went dangerously awry, causing planar forces and monsters to be released on the people working there, and threatened the nearby city of Quantium. Nex and his senior apprentices engaged a failsafe known as the Stalwart Wall to contain these menaces, creating a magical wall around the island that none could escape. The barrier still exists today; anything can enter the island but nothing is able to return.1

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