Blood Summons

As an additional cost to cast this spell, pay 5 life.
Exile cards from the top of your library until you
exile a creature card with power less than or
equal to the amount of life paid to cast this spell.
Put that card onto the battlefield, then put all
other cards exiled this way into your graveyard.
Creatures that enter the battlefield this way gain
haste and lifelink until end of turn.
"Make the call. We need all the help we can get."