Creature — Human Insect
Flying At the beginning of your upkeep, put the top card of your library into your graveyard. If it's an instant or sorcery card, transform Aberrant Researcher.
For more information on double-faced cards, see the Shadows over Innistrad mechanics article (http://magic.wizards.com/en/articles/archive/feature/shadows-over-innistrad-mechanics).
No player may take any action between the two steps of Aberrant Researcher’s triggered ability. If the card put into your graveyard is an instant or sorcery card, Aberrant Researcher will have transformed before a player can take any action.