Pidgey

Flying
{1}{w}: Search your library for a card named Pidgey and put it into your hand, then shuffle your library. Only use this ability during your turn
At the beginning of your upkeep, place an evolution counter on Pidgey. If Pidgey has 1 or more evolution counters you may exile it. If you do, search your library for a card named Pidgeotto. Place it onto the battlefield and shuffle your library