Description:

The Worldroot Staff is a gnarled and ancient staff, entwined with living vines and adorned with leaves that seem to shift colors with the seasons. The staff feels oddly warm to the touch, and its wooden surface is covered in cryptic runes that seem to shift and change when observed.

Drawback:

The curse is insidious, making the bearer believe that the staff is a powerful boon rather than a dangerous liability. Over time, the bearer may start to feel a deep connection to the natural world, making them more susceptible to the staff's influence and less likely to resist its potential transformation. The staff subtly manipulates the user’s perception, leading them to believe that becoming a World Tree is their ultimate destiny or a great sacrifice for a greater good.

Notes for the Dungeon Master:

The transformation into a World Tree should be a significant event in the campaign. It could be used to mark a dramatic change in the story, serving as a point of no return for the character. The World Tree may also serve as a powerful guardian or a lasting monument, affecting the campaign world in various ways. Consider the impact on the party and the setting when incorporating this cursed item into your game.