Tatiana, Mistress of Duality

Indestructible
As long as your devotion to black and white is
less than seven, Tatiana isn't a creature. As
long as your devotion to blue is greater than 4,
Tatiana has hexproof and can't be blocked.
{w}{u}{b}, {t}: Put another target permanent
on top of its owner's library. Put a -1/-1
counter on Tatiana.