The Chills

You smear the sweat from someone with a fever on your hands, and they become wreathed in cool mist. Make a spell attack against a target. On a hit the target begins to suffer from chills and hypothermia, taking 1d12 cold damage, and on each of your turns you can use your action to deal an additional 1d12 cold damage. The spell ends if you do anything else on with your action or if the target moves out of the range of the spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the initial damage increases by 1d12 for each slot level above 1st.