Yamato

Cast Time: 1 action Range: 100 feet (40-foot radius) Components: V, S, M (a vial of plague-ridden blood) Duration: Concentration, up to 1 minute A swirling vortex of toxic miasma consumes everything, reducing all to decay. Any creature that starts its turn in the area must make a Constitution saving throw or take 9d10 poison damage and be paralyzed. If they fail three saving throws in a row, they die instantly as their body rots away.