Vile Bile Boil

Make a ranged spell attack against the target. On a hit, the target takes 2d8 necrotic damage, and must succeed on a Constitution saving throw against your spell DC or become stunned until the start of your next turn.

Additionally, at the start of its turn, a creature stunned by this spell must use its action to make a Constitution saving throw against your spell DC. On a failure, they take an additional 2d8 acid damage and regurgitate. On a success, they are no longer stunned.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the initial necrotic damage increases by 1d8 for each slot level above 1st.