The Dimension Mirror

{t}: Add {2} to your mana pool.
{3}, {t}: Put a -1/-1 counter on target creature.
{5}, {t}: Create a token that's a copy of target
creature except the token is black, isn't legendary
if target creature is legendary, and gains Menace.
If you stare into it for too long, you won't recognize
the person staring back.