Nabooru, the Spirit Sage

Indestructible
As long as your devotion to white is less than
five, Nabooru, the Spirit Sage isn't a creature.
(Each {w} in the mana costs of permanents you
control counts towards your devotion to black.)
Other creatures you control have Flanking.
{1}{w}{w}, {t}: Creatures you control get +1/+0
until end of turn.