Guzaar, Titan of Nature's Past

When Guzaar enters the battlefield, sacrifice it
unless it escaped.
Whenever Guzaar enters the battlefield or attack, search your library for a land and/or creature
card. Reveal those cards and put them into your
hand. Shuffle your library.
Escape—{g}{g}{g}{u}{u}{u}, Exile five other
creatures from your graveyard (You can cast this
card from your graveyard for its escape cost.)