Anub'arak, Traitor King

{w}{w}: Choose either flying, first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, reach, trample, or vigilance. If a creature card in your graveyard has the chosen keyword, put a corresponding counter on each creature you control.
{3}{g}{g}, {t}: Create X 3/3 black and green Zombie Insect creature tokens with haste, where X is the number
of counters on Anub'arak, Traitor King.
Counters remain on Anub'arak, Traitor King as it moves
to any zone other than a player's