Event Horizon

This spell can be cast with in two forms. It can be cast in a similar way to Mage Armour or Magic Circle. 

If cast like Mage Armour, then only you will be protected. You will get a +5 to your AC and any enemy that attempts to attack you will take force damage. On a failed attack roll the enemy will take 16d8 of force damage and on a success they will take half damage. Any creature that is within 10 feet of you will instantaneously take 20 points of damage.

If cast similar to Magic Circle, then anyone inside the circle will be shielded from the effects. Anyone within 10 feet of the circle when it is first cast will take 30 points of damage and be thrown back 30 feet. Any attacks rolls made on anyone within the circles limits will have disadvantage. If anyone steps in the circle then they will take 20 points of damage and will be knocked prone as they are pulled to the center of the circle, where they will continuously take 5 points of damage until they reach the very center. The safe space in the circle is determined by the caster. Anyone who is outside the safe space, but within the circle will be knocked prone, paralyzed, and continuously take 5 points of force damage until they reach the very center.