Just got this AP and my three Helm of Secrecys don't have the damage clause in the last sentence. Just reads, "Swap those heroes, moving all eligible attachments to the hero from your collection." Think this is a misprint or another one of those FFG erratas they just added to cards without telling anyone? Can't find anything else on the internet that mentions this.
Helm of Secrecy
Limit 1 per deck.
Action: Choose a hero you control and discard all tokens from it. Select a different non-, non- hero from your collection with a threat cost less than or equal to the chosen hero. Swap those heroes, moving all eligible attachments to the hero from your collection.
Under the Ash Mountains #90. Neutral.
Isn't it odd, that a helm gets the staff trait? I guess this happens when offering common sense to game mechanics.
Also, it seems there is a printing error; the first occurrence of token should probably be a resource token instead. (you cannot discard all tokens and then transfer the damage tokens)