Bugle’s blisterpox

The caster sends out a small mote of necrotic energy, on contact the target takes 1d8 necrotic damage, and makes a constitution saving throw. On a fail the target has disadvantage on all dexterity saving throws for the next minute, as well as all attacks made within the same time, the afflicted target may make a constitution saving throw at the end of each of their turn to end this spell’s affect early