Wondrous Item Legendary (20.000 gp)
When you make an Intelligence (Arcana) check to control a sphere of annihilation while you are holding this talisman, you double your proficiency bonus on the check. In addition, when you start your turn with control over a sphere of annihilation, you can use an action to levitate it 2 sqr. (3m) plus a number of additional 1 sqr. (1.5m) equal to your Intelligence modifier.