Requiem Arrow

When this card enters the battlefield, call out a creature name.
Once every two turns, during any player's turn,
you may exile the enchanted creature until the
end phase (This card is enchanted to it until it
goes to the graveyard), then place a creature with
the called out name onto the battlefield from
outside the game or exile. It gains haste until end
of turn.
During the end phase, exile the called out card.
This is... Requiem