Shadow Amulet

Adventuring Gear

Rare

When you are holding this item, you may spend an action to
summon a shadow demon in an unoccupied space within 5
feet of you (refer to the Monster Manual for the relevant
statblock). This shadow demon is friendly towards you and
allies that you designate and obeys your commands. The
shadow demon has access to all of its normal abilities and
features and acts directly after your turn. The shadow demon
disappears after 1 minute, if it drops to 0 hit points, you
become unconscious, or if it ends its turn more than 30 feet
away from the amulet.

Whenever the shadow demon is summoned, there is a 10
per cent chance that this item will instead shatter, releasing
the shadow demon from the amulet and freeing it from your
control. In this case, it rolls for initiative and acts on its own
turn, and is unfriendly to any creature around it. It does not
disappear unless it is reduced to 0 hit points.