Making Elves cost 1 less is fair, but Elf decks can easily ramp mana, so getting extra cards is the real appeal for this sylvan tribe
The cards rotate at a 2-year pace and are not available on paper, but are still cool otters
And there's an interesting caveat about how the trigger's resolution works

Paths of the Dead (Cavern of Souls) Valley of Gorgoroth (Wasteland) Fangorn Forest (Yavimaya, Cradle of Growth) The Dead Marshes (Urborg, Tomb of Yawgmoth) Helms Deep (Shinka, the Bloodsoaked Keep) Henneth Annn (Reflecting Pool) Inn of the Prancing Pony (Pillar of the Parwns) Bucklebury Ferry (Oboro, Palace in the Clouds) Redhorn Pass (Mouth of Ronom) Osgiliath, Fallen Capital (Kor Haven) White Tower of Ecthelion (Krakas) Bag End (Horizon Canopy) Glittering Caves of Aglarond (Gemstone Caverns) Meduseld, Golden Hall of Edoras (Castle Ardenvale) Minas Morgul (Cabal Coffers) Balins Tomb (Ancient Tomb) Barrow-Downs (Bojuka Bog) Isengard, Sarumans Fortress (Boseiju, Who Shelters All) Weathertop (Deserted Temple) Edoras, Capital of Rohan (Hammerheim) Green Dragon Inn (Homeward Path) Dol Amroth (Minamo, School at Waters Edge) Caras Galadhon (Tranquil Thicket) Tower of Cirith Ungol (Urborg) The Dead Marshes (Urborg, Tomb of Yawgmoth) New and legendary MTG lands in LTR A Common rarity land called Shire Terracere was viewed during the first day of LTR spoilers on May 30

Everyones deck also tells you a little about their personality - it almost feels like I'm in an episode of Yu-Gi-Oh
It relies on a lot of trickery to frustrate your opponent