A Pauper Elves deck. Play mana dorks to ramp into an early Ulamog's Crusher. Use Lead the Stampede and Winding Way to feed you hand.
SIDEBOARD
4-0 Pauper events usually never fire in most game stores, but this is a great staple deck that you find in most tournaments. Ramping into a turn 3 or 4 board state is easy to stabilize. Sideboard Spidersilk Armor for Red/Black decks with toughness based removal or straight damage. Warden for more token based decks that are too fast or hate out your Wellwishers. Quirion Ranger for longer games where you need to generate more life or mana.
3-1 Pauper event fired for the first time in a long time, I did not have the deck I wanted to play prepared.