Margit’s Shackle is an item you can find in Elden Ring that will make the difficult Margit the Fell Omen boss battle easier.
As reported by GamesRadar, Margit’s Shackle can stop Margit the Fell Omen in his tracks for a few seconds when activated, but its usefulness does not end once that great enemy has been felled.
However, the item appears to be good for much more as it can seemingly help you discover hidden illusory walls and stop fire-breathing traps.
For more, check out our full Elden Ring Wiki, where you can check out our strategy to beat Margit and the location of every illusory wall that has been discovered so far.