Black Nail

You launch a spike of deep, black ichor at one creature in range. Make a ranged spell attack against the target. on a hit the target takes 8d8 necrotic damage. The target must then succeed a constitution saving throw or the spike takes root afflicting the target for the duration. While afflicted the targets speed is halved, they gain disadvantage on subsequent attack rolls after their first every turn, and  if they attempt to cast a spell they must make a concentration save DC equal to your spell save DC. on a failed save the spell fails to cast but the spell slot isn’t spent. the afflicted creature make another constitution saving throw at the end of each of its turns ending the affliction on a successful save

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th. When you cast this spell using a spell slot of 7th level or higher, you can target an additional creature for each 2 slot levels above 5th