Witch’s Grasp

You produce a stream of arcane tendrils that lash out towards a target within range. Make a ranged spell attack against it. On a hit, the target takes 3d10 Lightning damage.

If the target is Large or smaller, it is Grappled (escape DC equal to your spell save DC). On each of your subsequent turns, you can take a Bonus Action to deal 1d10 Lightning damage to the target automatically. At the start of each of it’s turns, the target can repeat the save to escape. On a success, the spell ends.

The spell ends if the target moves beyond the spell’s range, or if it has Total Cover from you. You may choose to end the spell at any time (no action required).

Using a Higher-Level Spell Slot. The initial damage increases by 1d10 for each spell slot level above 2.