Magic Items

Flavor:
This maul’s head is sculpted to resemble the first storm giant’s ruler, King Hekaton. The edge wears and scars marking the weapon speaks about the brutal battle its previous owner has gone through with the other giants. Whenever a giant comes within range of its wielder, the maul glows and lets out sparks of electricity.

While holding this rod, you can take a Magic action to activate it. The rod then instantly transports you and up to 199 other willing creatures you can see to a demiplane. You choose the form the demiplane takes. It could be a tranquil garden, a cheery tavern, an immense palace, a tropical island, a fantastic carnival, or whatever else you can imagine. Regardless of its nature, the demiplane contains enough water and food to sustain its visitors, and the demiplane’s environment can’t harm its occupants. Everything else that can be interacted with there can exist only there. For example, a flower picked from a garden there disappears if it is taken outside the demiplane.

For each hour spent in the demiplane, a visitor regains Hit Points as if it had spent 1 Hit Point Die. Also, creatures don’t age while there, although time passes normally. Visitors can remain there for up to 200 days divided by the number of creatures present (round down).
When the time runs out or you take a Magic action to end the effect, all visitors reappear in the location they occupied when you activated the rod or an unoccupied space nearest that location. Once used, this property can’t be used again until 10 days have passed.
This rod has the Wicked property: When the bearer is presented with an opportunity to act in a selfish or malevolent way, the item heightens the bearer's urge to do so.
Flavor Text: "This blue-green staff set with a red tourmaline is a treasure from Oghma, the Lord of Knowledge. Bearers of this rod seem to always feel a heightened sense of self-interest while holding this item."

Wondrous Item, common
This copper amulet contains tiny interlocking gears and is powered by magic from Mechanus, a plane of clockwork predictability. Faint ticking and whirring noises emanate from within. When you make an attack roll while wearing the amulet, you can forgo rolling the d20 to get a 10 on the die. Once used, this property can't be used again until the next dawn.
Flavor Text: "This amulet has the Language property: The bearer can speak and understand Modron while the item is on the bearer's person."

Wondrous Item, legendary (requires attunement by a wizard)

Flavor
The first book of Mystryl emits a divine green glow when in use. The symbol of Mystryl is carved into the front. Three of such books exist and the full extent of their capabilities are unknown. You may request the book to perform a task for you (at DM’s discretion), however the book may or may not accept your request. If it does, a heavy price is expected.

Weapon (glaive), legendary (requires attunement by a Paladin)

Flavor:
The blade of this glaive is forged with obsidian steel black as night. Whenever it senses an undead, it glows a night blue light as if urging it's wielding to seek out such a creature, slay it, and offer its soul to Shar.

Hidden Message. While holding the stone, you can telepathically command it to replay the movie you starred in.

Flavor Text: A massive quartz gem, polished to a sheen. It came with a box full of ephemera and ads for upcoming releases.

Wondrous Item, uncommon (requires attunement)

While wearing these gloves, climbing and swimming don't cost you extra movement, and you gain a +5 bonus to Strength (Athletics) checks made to climb or swim.

Armor (plate), very rare
While wearing this armor, you gain a +2 bonus to AC (AC20). In addition, if an effect moves you against your will along the ground, you can use your reaction to reduce the distance you are moved by up to 10 feet.