Velekesh's Flay Alive

You temporarily shred the skin and life essence of a creature you can see within 60ft of you. Make a ranged spell attack against it, dealing 11d8 necrotic damage to it and skinning it. It is vulnerable to all damage and takes 1d10 necrotic damage at the start of its turn for one minute, as it is temporarily skinned. A creature can try to succeed on a constitution saving throw at the end of its turn to try and end the effect.