Pocket Dimension

A pocket dimension is an artificial plane of existence that is secluded by magic. In greater size, it forms a near-transparent dome around the target area, although smaller pockets can easily be invisible to any but the one who conjured it. Depending on the size of the affected area, it can take from a single skilled mage to several powerful mages to keep it in place. Powerful wizards can also seal the dimension until a later time when he wishes to open it again. The dimension also slows down time in the affected area, and it can effectively protect people from many magical hazards, such as mana bombs.