Call the Storm

You call forth the storm around you and are surrounded with wisps of cloud trailing ice or sparks for the spell’s duration.

Until the spell ends, any attack you make deals 1d8 extra damage when you hit a creature within 10 feet of you. This damage is lightning, thunder, or cold (your choice when you cast the spell). Any creature that takes this damage can’t take reactions until the start of your next turn.

In addition, any creature of your choice that you can see that starts its turn within 10 feet of you has its speed reduced by 10 feet until the start of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for every two slot levels above 3rd.