Water Wall

A water wall shoots out from the caster's hand 15ft wide and can either be used as a physical barrier between you and an attacker (adding 2 to your AC if someone targets you through it) or it can be summoned in front of you (even if a target is there) and pushed up to 30 feet away hurting everything it passes through in between. The targets must succeed at a Dexterity save DC12 and on a successful save they will take half damage. This spell deals 1d6+4 piercing damage and soaks the target also knocking them prone if they do not succeed a DC12 Strength check. 

When casted with a higher level spell slot the damage is increased by 1d6 and the range is increased by 5ft. (Every 3 levels the AC bonus from using it as a barrier goes up by 2)(Every 4 levels the width of the wall is increased by 10ft)

When using a material component that has a strong tie to decay (Such as a anything that has to do with acid) you can add on a similar amount of damage onto the attack in acid damage rather than piercing damage, the original damage still occurs just with this added on and the material component is eaten when using this bonus effect.