Corrosive Blob

You toss a glob of steaming slime at a creature within range. Make a ranged spell attack against the target. If the attack hits the creature takes 1d6 on the start of its turns until either the creature or an allied creature uses its action to wipe off the slime or the spell ends. The damage dealt at the start of each of the creatures turn is increased to 1d8 if the creature is not wearing armor.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the duration increases by 1 turn for each slot level above 1st.