Brain Freeze

Target one creature within range, the target must make a constitution saving throw on a failure the target takes 2d10 cold damage, or half as much on a success. On a failure, until the end of its next turn, if the creature wishes to cast a spell, it must make an ability check with their spell casting modifier against you spell save DC, on a failure the creature is unable to cast the spell but the spell slot is not wasted.  Additionally, the target suffers disadvantage on any concentration check that it makes due to this spells damage. If you cast this spell with a spell slot of 4th level or higher, this spell deals an additional 1d10 cold damage for each spell level above 3