The Eye of [[Vecna]] is a powerful artifact currently in the hands of [[Kress]].
It was removed from [[Vecna]] by Kas in the final confrontation in [[Wyepool]].
The things it gave [[Kress]] are:
- Resistance to necrotic damage
- walking speed increases by 10 feet
- Creatures cannot take a short or long rest within 300 feet of you
- You have vulnerability to all damage after attuning until you long rest 2d6 times.