Stealthy Slithering Snake

Unblockable except by creature with flying.
Stealthy Slithering Snake enters the battlefield
tapped unless 2 life or 2 land cards are sacrificed.
{t} {u}{u}{3} all creatures you control are
unblockable for the rest of your turn.
Sacrifice Stealthy Slithering Snake. You may
look at one opponent's hand and gain 5 life.