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 10 feet plus a number of additional feet equal to 10 × your Intelligence modifier.
Talisman of the Sphere in the 2024 rules
The 2024 Dungeon Master’s Guide revised the magic items, and the SRD 5.2 carries the new text. What changed:
Same rarity and attunement; the text is reworded for the 2024 rules glossary.
Type
Wondrous Item
Rarity
Legendary
Attunement
Required
While holding or wearing this talisman, you have Advantage on any Intelligence (Arcana) check you make to control a Sphere of Annihilation. In addition, when you start your turn in control of a Sphere of Annihilation, you can take a Magic action to move it 10 feet plus a number of additional feet equal to 10 times your Intelligence modifier. This movement doesn't have to be in a straight line.