Basically mandatory 3x in a pipe deck, highly desirable in any Gandalf deck to get Wizard Pipe. Outside of those, there's no shortage of 2 spirit allies, so take your pick. I wouldn't be disappointed to have him on my board, but unless you need the hobbit trait for something (Elevenses,) you'd probably be better served by Arwen Undómiel, Galadriel's Handmaiden or West Road Traveller instead.