Delilah the Mischievous

Flash. Haste. Shroud.
{2}{u} Tap target creature an opponent controls Delilah the Mischievous becomes a copy of that creature until the end of the turn.
{2}{u}{t} For as long as Delilah the Mischievous is tapped exile target creature. Return it to the battlefield under its owners control when Delilah becomes untapped or leaves the battlefield.