The Bubble of Personal Space

People now a days just don't understand personal space so show them a tangible presentation of yours. You tear a bubble of space that no one but you can enter reaching out 5ft in radius. Any creature that attempts to teleport or move into your space is shunted out and takes 2d12 force damage unless they are hostile to you then they take 3d12. Additionally when the spell is cast anyone within the radius of the spell must make a constitution saving throw or be throw back 30ft in a direction. * The only way to get rid of this bubble is to dispel it or have any anti-magic effect, however when being dispelled the spell counts as one level lower than it was cast at. For every level higher than the orginal, the spell will allow either one creature of your choice into the bubble, decided at casting time, or shun a specific creature even more. If a creature of your chosen type attempts to enter they take 4d12 damage.