I found a likely match for Storm in a Roblox game, but not a clear result for “grab Roblox” specifically. The most relevant public info suggests storm-related unlocks are usually tied to a badge or quest requirement , not a free shop purchase.

What the available info says

  • In one Roblox game, a storm modifier is unlocked by earning a specific badge called How Could This Happen.
  • That badge is earned by getting struck by lightning while riding into the storm.
  • Another Roblox result shows Storm abilities can be unlocked through a quest or training path , depending on the game.

For “Grab” on Roblox

I couldn’t verify a game-specific unlock path for Storm Ability in Grab from the info available here. The name may be misspelled, or it may be a local/community term for a different Roblox experience.

Most likely next step

Check the in-game badges, abilities, or quest menu for:

  1. A storm-related badge.
  2. A lightning or weather challenge.
  3. A level, quest, or crafting requirement.
  4. A season-pass or event reward label.

If you meant a different Roblox game title, paste the exact game name and I can narrow it down.