Spell Sniper says:
When you cast a spell that requires you to make an attack roll, the spell’s range is doubled.
Can I apply that to the part of Storm Sphere that says:
Until the spell ends, you can use a bonus action on each of your turns to cause a bolt of lightning to leap from the center of the sphere toward one creature you choose within 60 feet of the center. Make a ranged spell attack. You have advantage on the attack roll if the target is in the sphere. On a hit, the target takes 4d6 lightning damage.
The spell itself does not require the caster to make an attack roll. But there is the option to make a spell attack. I'm not sure if the Spell Sniper feat could be applied here.
Would the lightning attacks of the Storm Sphere benefit from the Spell Sniper feat?