Dirkwood Elder

Whenever a land enters under your control, you
may sacrifice it. If you do, create two 1/1 black
Crow creature tokens with flying.
{2}{g}, Sacrifice 2 crows: Look at the top ten cards
of your library. You may reveal a land from
among them and put it into your hand. Put the
rest on the bottom of your library in any order.
The natural progression of all things living is
sometimes imperfect.