Changes

You should know about portals: connections between the planes. Portals may be open to anyone passing by, or they may be locked without the proper key, which could be almost anything. For example: a physical object, a word spoken, a tune whistled, or a thought or emotion in the mind could all be keys. Portals take you from here to there without having to depend on a busy and/or short-tempered wizard with the rare combination of knowledge, power, time, and willingness to be your taxi service.

=== Sigil ===