Blackwater Faerie

Flying
{b}, {t}: Sacrifice Blackwater Faerie, search your library for a basic Swamp card, reveal it, put it into your hand, then shuffle.
Delirium- Whenever Blackwater Faerie is sacrificed, if there are four or more card types among cards in your graveyard, search your library for any basic land card instead, reveal it, put it into your hand, then shuffle.