Felurian, Lady of Twilight

When Felurian, Lady of Twilight enters the
battlefield, target creature gains shadow until end of
turn (That creature can block or be blocked only by
creatures with shadow.)
Whenever a creature with power 4 or greater
enters the battlefield under your control, draw a
card.
{1}{u}, {t}: Exile target creature you control and
return it to the battlefield under its owner's
control at the beginning of the next end step.