Tenzer's Disk of Destruction

You hold an adamantine disk in one hand while reaching in the air with your other, a disk of void-energy about 5feet in diameter is formed over your raised hand and you throw it at one target within range.

This target makes a Dexterity Saving Throw or suffers 10D8 Force damage, half as much on a succesful save.

A target reduced to 0 Hitpoints this way is cut clean in half and dies.