This magic item consists of a handle made of quartz crystal with iron veins throughout it. As an action, you can cause the handle to project a 5-foot-by-5-foot transparent barrier that is 1/4 inches thick that divides you from a space directly adjacent to you. The barrier lasts for 10 minutes, or until you use an action to collapse the barrier. Once the barrier has been collapsed, it cannot be used again until the next dawn.
This barrier functions identically to a wall of force spell, not allowing anything to pass through from either side of the barrier. At the end of each of your turns, you may choose to reposition the barrier to face one direction adjacent to you. The barrier stays in that orientation until you choose change it. The barrier may provide full, 3/4, or 1/2 cover from both ranged and melee attacks depending on the orientation of the barrier and the attack. For more information on cover, see Chapter 8 of the Dungeon Master's Guide.
The barrier may also be used to exclude creatures from area of effect spells and effects. For example, if a fireball spell is cast on a point in front of the barrier, all creatures behind the barrier will be excluded from it's area, since it is a sphere in area. However, the barrier would not protect from a fireball that targets a point that is behind the barrier. Additionally, since the barrier is transparent, it would not protect from any spell that only targets individual creatures and requires a line of sight, such as charm person. For more information on area of effect spells and if this barrier can protect against them, see Chapter 10 of the Player's Handbook.
If the barrier is hit by a disintegrate spell, the barrier is destroyed and cannot be conjured for 1d10 days.
Notes: Control
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