I think the Owling Mine archetype from standard has the potential to compete in Legacy.

Root Maze has synergy with Howling Mine and really locks down their fetch lands.

Not sure how much more there is to say about this... just looking for some suggestions.

Artifacts
2x Isochron Scepter
4x Ebony Owl Netsuke
1x Storm Cauldron
1x Viseling
4x Howling Mine

Creatures
1x Swans of Bryn Argoll
2x Kami of the Crescent Moon
4x Birds of Paradise

Enchantments
4x Root Maze

Land
1x Mikokoro, Center of the Sea
2x Yavimaya Coast
4x Misty Rainforest
8x Island
6x Forest

Spells
1x Storm Seeker
4x Arcane Denial
4x Remand
4x Boomerang
4x Call to Heel

Draw some sample hands here:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=258734