Expansive Domain of the Starlit Night

Nightspace encloses the space around you, giving you dominion over the area.

Sphere of Night. When you cast this spell, a 30-foot sphere centered around you appears. The sphere is opaque, and can be entered from the outside, but cannot be exited.

Mark of Light. At the beginning of your turn, you send a blast of radiant energy targeting one creature in the area. That creature must make a Dexterity saving throw or take 2d8 radiant damage, and the next attack roll made against this target before the end of your next turn has advantage, thanks to the mystical dim light glittering on the target until then.

Spatial Warping. When a creature begins its turn in the area, it must make a Charisma saving throw. On a failed save, its speed is halved, and it makes ranged attack roles with disadvantage until the beginning of its next turn.