This Shield has a black gauntlet affixed to it for a handle and cannot be removed. It has the following characteristics.

You can use an action to verbally command the Shield, which causes the shield and gauntlet to become magically fixed in place. Until you or another creature uses an action to equip the shield again, the shield doesn't move, even if it is defying gravity. The shield can hold up to 10,000 pounds of weight. More weight causes the shield to deactivate and fall. A creature can use an action to make a DC 30 Strength check, moving the fixed shield up to 10 feet on a success.

Once the shield accepts a wielder, any other creature that equips the gauntlet will lose a hand during use and take 3d6 Necrotic damage. If the same creature attempts to equip it again it must sacrifice another hand and take 3d6 necrotic damage. 

The Shield grants the wearer 60 ft infra-vision while equipped. 

If the shield is attuned to an 11th level creature, then it has the following added feature.

as a bonus action or a ready action, the shield can be verbally commanded to expand 10 ft wide when unequipped.  When in this state, a creature of small size can use the hide action behind it, it can provide 1/2 cover (+2 AC) for 2 creatures , or at 3/4 cover (+5 AC) for 1 creature when 10 ft high. 

If the shield is attuned to an 16th level creature, then it has the following added feature.

As an action the shield can independently grapple a medium sized creature.

The shield is sentient and has the following stats.

Lawful Evil

STR 20 INT 7  WIS 7 CHA 12

 

Shields require the Utilize action to Don or Doff. You gain the Armor Class benefit of a Shield only if you have training with it.

Notes: Dawning the Gauntlet Consumes your hand forever. Only using a wish spell can restore it.