Arcane Hinderance

Upon an enemy casting a spell of any kind, you may use this spell to temporarily prevent them from casting that specific spell for the next round. When this spell is cast, the target must succeed a saving throw of their spellcasting ability, the DC of which being 10 + their spellcasting modifier. Upon a failed save, the target cannot cast the interrupted spell for the next round. On a successful save, the interrupted spell goes through as normal.

At Higher Levels. When cast at a level of 6th level or higher, the duration that the interrupted spell is disabled for increases by the additional spell levels it is cast at. (i.e. if cast at 7th level, the spell is disabled for 3 rounds afterwards.)