Thesalor's Magnificent Midnight Rain

You create a small, inky black, orb 15-20ft from the ground within range. The orb begins to spin incredibly fast, slinging dark droplets in all directions and in a 30ft radius from the orb. All creatures within the 30ft radius must make a DEX saving throw, against the caster's spell DC, in order to avert their eyes or be blinded at the start of their next turn for 1 turn. In addition, any invisible creatures in the spells effected area becomes splattered with ink and is revealed.