Acid blade

acid comes from all directions and forms into a blade you aren't affected by the acid allowing you to hold the blade this can take the shape of any blade you choose when you attack with this blade it does 1d8 acid damage when you dispell the blade the acid summons a jug to be stored in for later use 

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage (both initial and later) increases by 1d4 for each slot level above 5