Allo there, Bungie has recently disabled the Felwinter's helm exotic due to an exploit. https://twitter.com/BungieHelp/status/1243617581249875968?s=19 [Quote]We have identified an issue with the Felwinter’s Helm Warlock exotic helmet that allows players to emit a detonation impulse that blinds and weakens enemies on any kill. We have disabled this exotic until a fix can be deployed at a later date.[/quote]