Tome of the Stilled Tongue(legendary)

Legendary

This thick leather-bound volume has a desiccated tongue pinned to the front cover. Five of these tomes exist, and it's unknown which one is the original. The grisly cover decoration on the first tome of the stilled tongue once belonged to a treacherous former servant of the lich-god Vecna, keeper of secrets. The tongues pinned to the covers of the four copies came from other spellcasters who crossed Vecna. The first few pages of each tome are filled with indecipherable scrawls. The remaining pages are blank and pristine. If you can attune to this item, you can use it as a spellbook and an arcane focus. In addition, while holding the tome, you can use a bonus action to cast a spell you have written in this tome, without expending a spell slot or using any verbal or somatic components. Once used, this property of the tome can't be used again until the next dawn. While attuned to the book, you can remove the tongue from the book's cover. If you do so, all spells written in the book are permanently erased. Vecna watches anyone using this tome. He can also write cryptic messages in the book. These messages appear at midnight and fade away after they are read.

Robe of the Archmagi

Legendary

Wondrous Item, Major, Legendary (Requires Attunement by a Sorcerer, Warlock, or Wizard) This elegant garment is made from exquisite cloth of white, gray, or black and adorned with silvery runes. The robe's color corresponds to the alignment for which the item was created. A white robe was made for good, gray for neutral, and black for evil. You can't attune to a robe of the archmagi that doesn't correspond to your alignment. You gain these benefits while wearing the robe: If you aren't wearing armor, your base Armor Class is 15 + your Dexterity modifier. You have advantage on saving throws against spell and other magical effects. Your spell save DC and spell attack bonus each increase by 2. Originally crafted during the height of the Netherese Empire, this robe is a warm gray color and very plush. It is stitched with silver thread and the back is covered by Rhaugilath’s arcane sigil mixed with the sign of Mystryl.