The Glacial Chains of Cania

A frigid beam of blue-white light streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 5d4 Cold damage + your spell casting modifier,  the creature must make a  DC 15 charisma saving throw if it fails icy chains wrap around the creature and its speed is reduced to 5ft until the start of your next turn when the target retakes the saving throw. For each turn the target spends in the chains it takes 1d8 neurotic damage. 

At Higher Levels:  When you cast this spell using a spell slot of 2nd level or higher, the damage cold increases by 2d4 and 1b2 necrotic damage for each slot level above 1st.