The Cloak of the Weave in BG3 is bought from Helsik at the Devil’s Fee in Act 3. You usually need to unlock her special inventory first by investigating the shop upstairs and then talking to her again, after which the cloak can be purchased.

Fast path

  1. Go to the Lower City and enter Devil’s Fee.
  1. Search the upstairs/back room area and inspect the infernal-looking items there.
  1. Return to Helsik and choose the dialogue that gets her to show her full stock.
  1. Buy the Cloak of the Weave from her shop.

Notes

  • Some guides say you may need to find specific items in the shop or pass dialogue checks to unlock the hidden stock.
  • One guide also notes that completing House of Hope can make the expanded inventory available.
  • The price varies by source, with reports around 300–500 gold depending on the guide and setup.

Practical tip

If Helsik only shows basic goods at first, keep exploring the shop and then speak to her again. That’s the usual trigger for the cloak becoming available.

TL;DR: Act 3, Lower City, Devil’s Fee, Helsik, unlock her secret stock, then buy it.