Domain Expansion

You create a a small altered field, which you determine the appearance of centered on yourself. This demiplane is both defensive and offensive. To the outside world this area looks like a greyish black smoke. Every creature in a radius of 200ft when this spell is first cast must make a Charisma Saving Throw against your Spell Save DC. On a successful save the creature appears just outside of the spell range in an unoccupied space. On a failed save the creature stays within the demiplane. Creatures and objects can enter and exit freely.

When you first cast this spell you can choose three of the follow effects. 

*Creatures must succeed a Charisma Saving Throw to enter

*Creatures must succeed a Charisma Saving Throw to exit.

*No creature can cast spells such as demiplane or planeshift to leave your demiplane. 

*You name one spell of 8th level or lower. That spell can't be cast within your demiplane. 

*You can make difficult terrain in your demiplane. 

*You have the effect of the Fly spell while in your demiplane.

*You can heal 10 hit points on the start of your turn while in your demiplane. 

*When the spell is cast, counterspell cannot be cast in response, and dispel magic cannot be cast in order to dispel the domain.

*The attacks you make within your domain are always at advantage, regardless of any other conditions.

*Any attacks made against you are always at disadvantage, regardless of all conditions.

 *Select a spell on your spell list, below fifth level with a casting time of one action. You expend a spell or pact magic slot, and cast it immediately as part of the casting of this spell.

If two creatures cast Domain Expansion in the same area, the creatures make contested checks with their spell attack bonus. The loser's spell is dispelled, and the spell slot is expended