Four-Color Delver
A Legacy deck, by Louisbach
1st place at a tournament in Online on 2016-12-10

Maindeck:

Creatures
4 Deathrite Shaman (Banned in Legacy)
4 Delver of Secrets
2 Gurmag Angler
4 Young Pyromancer

Instants
2 Abrupt Decay
4 Brainstorm
4 Daze
3 Force of Will
3 Lightning Bolt
2 Stifle

Sorceries
2 Cabal Therapy
4 Gitaxian Probe (Banned in Legacy)
4 Ponder

Lands
4 Misty Rainforest
3 Polluted Delta
2 Tropical Island
2 Underground Sea
3 Volcanic Island
4 Wasteland

Sideboard:
1 Grafdigger's Cage
1 Null Rod
1 Pithing Needle
1 Grim Lavamancer
1 Sulfuric Vortex
1 Sylvan Library
1 Diabolic Edict
1 Electrickery
1 Flusterstorm
1 Force of Will
1 Price of Progress
2 Pyroblast
1 Surgical Extraction
1 Life from the Loam