This was one of those cards that I never thought I'd actually put into a deck, but I've found that it can be quite strong in conjunction with a Woodman/location attachment deck in a multiplayer game. Specifically, in quests that spit out multiple locations over and over (i.e. Lost in Mirkwood) it may not be feasible to travel to and clear all those locations before you need to make progress on the main quest (and this is only exacerbated in quests that include objective-locations that are immune to player card effects). As the game goes on, the staging area fills up, making it increasingly difficult to quest over when you need that big push at the end. However, if you have spent the game spreading out location attachments (Explorer's Almanac, Guarded Ceaselessly, Guarded cards, Thrór's Key, Power in the Earth, etc.), you can effectively neutralize an entire staging area's worth of locations for 1 resource (I've negated up to 10 in a two-handed game before).

Is it niche? Absolutely! Is it lots of fun to pull off? Absolutely!