Void Glide. The Void Elemental is not subject to gravity.

Entropic Mastery. If a creature is reduced to 0 hit points by force damage dealt by the elemental, that creature is obliterated and can only be restored to life with a wish or true resurrection spell.

Multiattack. The Void elemental makes two slam attacks.

Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 22 (4d10) [force] damage.

Void Gaze (1/Day). Each creature within 60 feet of the void elemental that can see it must make a DC 15 Wisdom saving throw. On a failed save the creature becomes charmed for 1 minute. While charmed by the void gaze, the creature is incapacitated and has a speed of 0. Each time the void elemental or the void elemental's companions do anything harmful to the target, it can repeat the saving throw, ending the effect on itself on a success. Otherwise, the effect lasts 1 minute or until the void elemental is destroyed, is on a different plane of existence than the target, or takes a bonus action to end the effect.