Homebrew
2-level Divination
You create a 15-foot-radius sphere centered on a point within 60 feet of you. For the duration, when a hostile creature enters the area for the first time on a turn, or it moves more than 10 feet on its turn within the area, you can use your reaction to make an attack against it with a ranged weapon that you are wielding. While the spell is active, you can choose a new area within range as a bonus action on your turn.
In addition, you gain advantage on Wisdom (Perception) checks to spot creatures trying to hide within the area.
When you cast this spell using a spell slot of 3rd level or higher, the radius of the sphere increases by 5 feet for each slot level above 2nd.
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