Sphere of Ultimate Destruction
Tier 3 Epic conjuration
Casting Time: 1 action
Range: 120 feet
Components: V, S, M (a black diamond cut into a perfect sphere)
Duration: Concentration, up to 1 minute
You summon a 5-foot-diameter sphere of pure destructive emptiness in a space of your choice within range which lasts for the duration. Whenever anything comes into contact with the sphere for the first time that round, it takes 30d10 force damage. A creature that makes contact with the sphere can attempt a Constitution saving throw to halve the damage. Anything reduced to 0 hit points by the sphere is instantly and totally destroyed, leaving no remains.
The sphere is capable of flight, and as a bonus action you can move the sphere up to 60 feet. If the sphere maintains contact with a magical item of legendary quality or lower for its full duration, that item is disintegrated.
As an action, you can choose to end the spell and open a portal to the void at the sphere’s location. Everything within 60 feet of the portal must succeed on a Strength saving throw or be drawn into the void and instantly destroyed, leaving no remains.
Ref: ELCR p104