Magic Items

Weapon (dagger), rare
Major tier
Simple weapon, melee weapon
1 lb. 1d4 piercing - finesse, light, thrown (20/60 ft.)
You gain a +1 bonus to attack and damage rolls made with this magic weapon.

You can use an action to cause thick, black poison to coat the blade. The poison remains for 1 minute or until an attack using this weapon hits a creature. That creature must succeed on a DC 15 Constitution saving throw or take 2d10 poison damage and become poisoned for 1 minute. The dagger can't be used this way again until the next dawn.

You gain a +1 bonus to attack and damage rolls made with this magic weapon.

You can use an action to cause thick, black poison to coat the blade. The poison remains for 1 minute or until an attack using this weapon hits a creature. That creature must succeed on a DC 15 Constitution saving throw or take 2d10 poison damage and become poisoned for 1 minute. The dagger can't be used this way again until the next dawn.
The pommel of this wicked looking dagger looks like a black viper with a forked blade worked to resemble the tongue.

This tome contains information and incantations necessary to make a particular type of golem. The DM chooses the type or determines it randomly. To decipher and use the manual, you must be a spellcaster with at least two 5th-level spell slots. A creature that can't use a manual of golems and attempts to read it takes 6d6 psychic damage.

To create an iron golem, you must spend 120 days, working without interruption with the manual at hand and resting no more than 8 hours per day. You must also pay 100,000 gp to purchase supplies. Once you finish creating the golem, the book is consumed in eldritch flames. The golem becomes animate when the ashes of the manual are sprinkled on it. It is under your control, and it understands and obeys your spoken commands.

Wondrous item (tattoo), very rare (requires attunement)
Produced by a special needle, this tattoo shifts and wavers on the skin, parts of it appearing blurred.

Tattoo Attunement. To attune to this item, you hold the needle to your skin where you want the tattoo to appear, pressing the needle there throughout the attunement process. When the attunement is complete, the needle turns into the ink that becomes the tattoo, which appears on the skin.
If your attunement to the tattoo ends, the tattoo vanishes, and the needle reappears in your space.

Ghostly Form. The tattoo has 3 charges, and it regains all expended charges daily at dawn. As a bonus action while the tattoo is on your skin, you can expend 1 of the tattoo's charges to become incorporeal until the end of your next turn. For the duration, you gain the following benefits:
You have resistance to bludgeoning, piercing, and slashing damage from nonmagical attacks.
You can't be grappled or restrained.
You can move through creatures and solid objects as if they were difficult terrain. If you end your turn in a solid object, you take 1d10 force damage. If the effect ends while you are inside a solid object, you instead are shunted to the nearest unoccupied space, and you take 1d10 force damage for every 5 feet traveled.