Magic Lasso

A radiant lasso appears before you, and lashes out toward a creature within range, forming a luminous cord between you and the target. Make a ranged spell attack against that creature. On a hit, the target takes 1d6 radiant damage and is grappled, as the lasso wraps around the target. On each of your turns for the duration, you can use your action to deal 1d6 radiant damage to the target automatically. The spell ends if you use your action to do anything else. On it's turn, the target can make a strength (Athletics) or dexterity (Acrobatics) check against your spell save DC to escape the grapple. The spell ends if the target escapes the grapple, if the target is ever outside the spell's range, or if it has total cover from you.

The caster has advantage on any Wisdom (Insight) checks against the target while it is grappled in this way. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the initial damage increases by 1d6 for each slot level above 1st.