Vex Spawn Egg is a Creative-only item that summons a Vex when used on a block face in Minecraft. Vex Spawn Egg does not appear in the Survival inventory and cannot be crafted — players obtain Vex Spawn Egg from the spawn-eggs tab of the Creative inventory or with the command /give @s minecraft:vex_spawn_egg. Like every spawn egg, Vex Spawn Egg shows a two-tone design: a dark grey-blue base with lighter spots that mirror the Vex's ghostly body. Vex Spawn Egg was added in Minecraft 1.11, the Exploration Update, alongside the Vex, the Evoker, and woodland mansions.

Using Vex Spawn Egg spawns a Vex with 14 health points (7 hearts) that flies freely, phases through walls and blocks, and attacks with an iron sword for up to 9 damage on Normal difficulty. A Vex created from Vex Spawn Egg shares the same charged-attack behaviour as Evoker-summoned Vexes but does not vanish from the Evoker's life timer, making Vex Spawn Egg useful for testing redstone traps, building mob arenas, and filming combat scenes. Map makers rely on Vex Spawn Egg to place flying enemies in adventure maps where Evokers would be impractical.