EDH playable, maybe in kamigawa block? My EDH group at least sees a fair number of legendary lands, every deck seems to have at least one. In singleton formats there isn't really a drawback to many of them. Academy Ruins, Boseiju, Who Shelters All, Gaea's Cradle, Hall of the Bandit Lord, Minamo, School at Water's Edge, Nykthos, Shrine to Nyx and Urborg, Tomb of Yawgmoth are common plays in the format.

I have it in my green spirit EDH (Kodama of the South Tree) and it works for sure, but still isn't the most exciting play. A land kill with an optional upside is okay at 5 CMC, getting boosts off the arcane is nice even if I have little enough splice to work with.