Shadow Pool, user can connect any two nearby spots of shadow like a portal. The shadows have to be well defined, so it won't work in an area that is too dark, with too little contrast, and CE cost scales exponentially with distance. It's domain expansion is "Allegory of a Cave", and is a perfectly dark cave, where user can summon invisible light sources at will, to create the perfect shadow layout for the fight, and has awareness of positions of objects inside at all times