Shadowcast Illusionist

When Shadowcast Illusionist enters the battlefield, create a token that's a copy of it, but don't create a copy of the token.
{t}: Deal one damage to target creature.
{2}{u}{u}{b}{b}: Create a token that's a copy of Shadowcast Illusionist, but don't create a copy of the token.
{1}{u}{u}{b}{b}: Return Shadowcast Illusionist to the battlefield under it's owner's control, then sacrifice it.