Dementia Fragment

A creature of your choice that you can see within range has its mind injected with a portion of Cthulhu's Dementia Curse muddling their thoughts. Whenever a target makes an attack roll or a saving throw before the spell ends, the target must roll a d4 and subtract the number rolled from the attack roll or saving throw.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target one additional creature for each slot level above 1st.

A remove cruse cast on the target ends this spell early.

This spell has no effect on creatures without an intelligence score.