How can an illusion kill/shelter/move something?
The term illusion is used loosly. In RGS it refers to the condition where reality and the imagination of the person performing the illusion are the same. The Red Gate Society can live in an illusionary house, and survive off of eating illusionary food because imagination and reality become one. There is no difference. Note that the person performing the illusion must be close to the illusion. If Mother Chicka leaves the RGS headquarters, which she creates, it would dissappear.