Impromptu Summoning

Cleave {2}{b}{b}, Cleft {4}{g}{g} (You may cast this
spell for its cleave cost. If you do, remove the words in
square brackets. You may cast this spell for its cleft
cost. If you do, remove the words in curly brackets.)
Discard a card, then return a creature card in
your graveyard [that was put there from
anywhere this turn] to the battlefield. It gains
haste. { Sacrifice it at the beginning of the next
end step.}