Dust Touch

Choose a target within 5 meters, if you're attack is successful throw 10d10 for damage + constitution proficiency. Any creature that has been touched by this spell will be restrained for 1 minute.

Any creature that has been touched must make a constitutional saving throw. On a failed save, the creature takes 1d6 necrotic damage. On a successful save, the damage will be halved.

When your turn has ended you won't be able to use this spell for 5 turns, if you attempt to use this spell, throw a d20 and if you get above 15 you may use this spell with half the damage and won't be able to use it again for 10 turns, no d20 rolls, if you fail this throw you will take 1d8 necrotic damage and will never be able to use this spell again on the same hand.