Recouping some mana the turn it comes down and generating more later gives this a role in green decks, even if the big green monster slot is highly competitive
Another land thats also an impressive addition is Temple of Malice since it allows you to smooth out your draws and search for specific cards you need
Essentially, if you open any Ancient Tomb in your Edge of Eternity pack, you're going to be happy
I really like it for commanders in particular, since it means you can generally get your commander out fairly early, and depending on the card, benefit some from having it, but it won't eat a random Swords to Plowshares or a Lightning Bolt just because someone is getting wheeled out
A salty idea for this pirate commander is to build it around casting extra turn spells for free
Not fantastic, but decent in aggressive lists