Tartarus, Eternal Pit

{t} Add {1} to your mana pool
{2}{t} Exile target creature. It's controller can search his or her library for a creature with base power and toughness 2 or less.
{4}{t} Exile 5 target Creatures you control with base power and toughness 4 or less. Exile Tartarus, Eternal Pit, then return it to the battlefield flipped.