U/B Teachings
A Time Spiral Block deck, by Ross Pohling
6th place at a Pro Tour: Valencia tournament in New York, New York, United States on 2007-07-08
As reported at http://www.wizards.com/default.asp?x=mtgevent/valencia07ptq/0707newyork

Maindeck:

Artifacts
4 Prismatic Lens

Artifact Creatures
1 Triskelavus

Creatures
4 Shadowmage Infiltrator

Enchantments
2 Take Possession
1 Temporal Isolation

Instants
3 Careful Consideration
1 Haunting Hymn
3 Mystical Teachings
1 Pact of Negation
1 Slaughter Pact
4 Tendrils of Corruption

Legendary Creatures
3 Korlash, Heir to Blackblade
1 Teferi, Mage of Zhalfir

Sorceries
4 Damnation

Basic Lands
4 Island
1 Plains
5 Swamp

Lands
4 River of Tears
4 Terramorphic Expanse
3 Tolaria West
1 Urza's Factory

Legendary Lands
1 Academy Ruins
4 Urborg, Tomb of Yawgmoth

Sideboard:
4 Aven Riftwatcher
1 Take Possession
1 Teferi's Moat
2 Temporal Isolation
1 Disenchant
1 Extirpate
1 Pull from Eternity
4 Psychotic Episode