Magic Items

Sentinel Shield
Armor (shield), uncommon

Whenever the Sentinel Shield grants advantage on a roll, the eye on the front squints and the shield says “hmmmm” in a deep gravelly voice that is audible to anyone within 30 feet.

While holding this shield, you have advantage on initiative rolls and Wisdom (Perception) checks. The shield is emblazoned with a symbol of an eye.

Shadowneedle (Unbreakable Arrow)
Weapon (arrow), common (Common Table)

One of 20 unbreakable arrows crafted with Shadowsong the Oathbow. When fired, the wielder may say, “Needles, return to your thread” to make this arrow (and any other in its set loosed from the wielder’s hand) reappear in the wielder’s quiver.
This arrow can’t be broken, except when it is within an antimagic field.
This item can be found in Xanathar’s Guide to Everything.

Stone of Good Luck (Luckstone)
Wondrous item, uncommon (requires attunement)

Every color of the rainbow dances across this opal’s polished surface. Delicate silver leaves form loops that may be used to hang the luckstone from a chain or bind it to another item. It was once woven into the mane of the unicorn Arynn.

While this polished stone is on your person, you gain a +1 bonus to ability checks and saving throws.

Sword of Vengeance
Weapon (longsword), uncommon (requires attunement)
You gain a +1 bonus to attack and damage rolls made with this magic weapon.

Curse. This sword is cursed and possessed by a vengeful spirit. Becoming attuned to it extends the curse to you. As long as you remain cursed, you are unwilling to part with the sword, keeping it on your person at all times. While attuned to this weapon, you have disadvantage on attack rolls made with weapons other than this one.

In addition, while the sword is on your person, you must succeed on a DC 15 Wisdom saving throw whenever you take damage in combat. On a failed save, you must attack the creature that damaged you until you drop to 0 hit points or it does, or until you can’t reach the creature to make a melee attack against it.

You can break the curse in the usual ways. Alternatively, casting banishment on the sword forces the vengeful spirit to leave it. The sword then becomes a +1 weapon with no other properties.

The sword, no longer tainted by Malar’s corruption, is now a clear crystal. The sword is only loyal to the wielder, becoming a dull blade to anyone else. When the sword strikes a target, a blue-white trail is left briefly in its wake.