Dust to Dust

You point your finger toward a creature within range, and cause its existence to waver.

The target must make a Constitution saving throw - on a failure, the target is cursed until the end of its next turn. While the target is cursed, it is also Stunned. At the end of its next turn, the target can repeat its saving throw - if the target fails their saving throw again, and they have 100 hit points or fewer, their body turns to ash and dust, and scatters to the wind, as if destroyed by a Disintegrate spell.