Chill Blood

You freeze the blood flowing through a creatures veins

Target creature rolls a CON save.  On a fail they take 2d10 cold damage and their speed is halved (rounded down).  On each of your turns for the duration, you can use your action to deal 2d10 cold damage to the target automatically. The spell ends if you use your action to do anything else. The spell also ends if the target is ever outside the spell’s range.  On a success the spell fails.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the initial damage increases by 1d10 for each slot level above 2nd.