Deadwood Pines

Whenever enchanted land is tapped for mana, its controller adds {b}{b} to his or her mana pool (in addition to the mana the land produces).
At the beginning of your upkeep, if you have less than 10 life, you may search your library for a basic land or creature card with converted mana cost less than or equal to the number of swamps you control, and put it in your hand. If you searched your library this way, shuffle it.