acid sphere

You create a 10 by 10 feet sphere of acid which you can make it to follow the person you have pointed on for it to chase it chases the unlucky one until it hits the target creature it's target any creatures within the targets one range take half of the damage  and dealing 1d12 acid damage if you hit a nat 1 you hit yourself with it and any creature or allies within 10 feet of you takes half of the damage and if you fail  target creature will have to make a int save it the save needs to be over 14 for half damage