Deathflame hand

You conjure a flaming skeletal arm to hurl at enemies. Make a ranged spell attack. On a hit, the spell deals 2d6 necrotic damage, 2d6 fire damage and the creature must make a strength save or be Grabbed by the hand.

when grabbed by the hand, you can use your action on the start of your turns to automatically deal 4d6 fire damage, This end if you do anything else. It won't end if the creature is behind total cover but will end if out of your reach. 

at higher levels. The initial damage increases by 2d6 per spell level above 3rd.