Staff of the Dark Tree

Weapon (quarterstaff), very rare (requires attunement by a warlock, sorcerer, or wizard)

Once in an age, the dark druids who tend the Dark Tree, will prune one of its branches. Those branches are enchanted using dark and terrible rites, imbuing it with even more power than it already possesses. The process takes many weeks and has been known to drive people insane. But once completed, a Staff of the Dark Tree is born.

While holding this staff, you gain a +1 bonus attack and damage rolls. In addition, you are able cast the following spells once per day without using a spell slot: blessing of the void, fly, haste, and dark fireball. After casting one of these spells with the staff, you can’t cast that spell again until you complete a long rest.