Infect
A Legacy deck, by Sean Liu
22nd place at a tournament in Worcester, Massachusetts, United States on 2017-04-08

Maindeck:

Creatures
4 Blighted Agent
4 Glistener Elf
4 Noble Hierarch

Instants
2 Become Immense
2 Berserk
4 Brainstorm
4 Daze
1 Flusterstorm
4 Force of Will
4 Invigorate
1 Spell Pierce
2 Vines of Vastwood

Sorceries
2 Gitaxian Probe (Banned in Legacy)
4 Ponder

Basic Lands
1 Forest

Lands
4 Inkmoth Nexus
4 Misty Rainforest
3 Tropical Island
1 Tundra
4 Windswept Heath

Legendary Lands
1 Pendelhaven

Sideboard:
1 Null Rod
1 Pithing Needle
2 Mother of Runes
1 Viridian Corrupter
1 Rest in Peace
1 Seal of Primordium
1 Sylvan Library
1 Crop Rotation
1 Flusterstorm
1 Krosan Grip
1 Surgical Extraction
2 Swords to Plowshares
1 Wasteland