To me the main thing is probably their "uncategorized" musical style, I find this kind of combo of metal and various influences from other genres intriguing. I like especially those folk influences, they bring certain feeling in the songs. In this way I have even become interested in those other genres and my music taste has become much more wider. And somehow the mood of their music (and lyrics) is also very inspiring to me. Gigs are the another thing. I like that certain atmosphere at their gigs and I actually started to properly like the band after seeing a couple of live performs. Maybe it tells something, heh. Third thing which comes to mind, are their album artworks. As long as I have listened to them, I have also liked this nature-themed stuff - I think that they fit the mood of the music well.