Doomsday
A Legacy deck, by Tristan Polzl
5th place at a tournament in Annency, France on 2012-05-20

Maindeck:
1 Island
1 Plains

Artifacts
4 Lion's Eye Diamond
2 Lotus Petal
4 Sensei's Divining Top (Banned in Legacy)

Instants
4 Brainstorm
1 Chain of Vapor
4 Dark Ritual
3 Orim's Chant
1 Rain of Filth
4 Silence

Sorceries
3 Burning Wish
3 Doomsday
4 Gitaxian Probe (Banned in Legacy)
1 Ideas Unbound
4 Ponder

Basic Lands
1 Swamp

Lands
4 Flooded Strand
4 Polluted Delta
1 Scrubland
1 Tundra
2 Underground Sea
2 Volcanic Island

Legendary Lands
1 Karakas

Sideboard:
2 Serenity
1 Chain of Vapor
1 Slaughter Pact
1 Emrakul, the Aeons Torn
1 Doomsday
1 Duress
1 Empty the Warrens
1 Infernal Contract
1 Massacre
2 Tendrils of Agony
1 Time Spiral
1 Virtue's Ruin
1 Shelldock Isle