Spirits-Pike-Delver

A reasonable hybridization of Costa's winning GP list and 'spirits' (i.e. splashing for Lingering Souls). Maybe it's trying to do too much, but it seems alright.
//22
4 Seachrome Coast
4 Darkslick Shores
1 Swamp
4 Island
1 Plains
4 Glacial Fortress
2 Evolving Wilds
1 Moorland Haunt
1 Vault of the Archangel

//26
4 Ponder
4 Gitaxian Probe
4 Mana Leak
4 Vapor Snag
4 Lingering Souls
2 Sword of War and Peace
1 Runechanter's Pike
1 Thought Scour
2 Dismember

//12
4 Delver of Secrets
4 Snapcaster Mage
4 Geist of Saint Traft

Sideboard
2 Phantasmal Image
2 Celestial Purge
2 Batterskull
2 Jace, Memory Adept
2 Dissipate
2 Timely Reinforcements
1 Divine Offering
1 Revoke Existence