Calsification

Target 1 creature within a 100ft of you, its flesh begins to turn to bone. The targeted creature makes a CON saving throw if it succeeds the creature is unaffected by the spell for that round, but if it fails it starts turning to bone. On 1 failed saving throw, the target's AC is increased by 3 and its movement speed and DEX are halved. On 2 failed saving throws, the target's AC is increased by 5, its movement speed is reduced to 0, suffers disadvantage on attacks it makes and automatically fails to cast any spell that requires somatic components. On 3 failed saving throws the target is petrified until the spell is dispelled. If your concentration is broken while the target has 1 or 2 failed saving throws, the effects last for 3 rounds and that creature becomes immune to the spell for the next 24 hours.