Sisix, Geralf's Mistake

When Sisix enters the battlefield and at the
beginning of your upkeep, exile a creature card
from your graveyard. If you can't put a +1+1
counter on Sisix.
As long as a creature exiled with Sisix has flying,
Sisix has flying. The same is true for lifelink,
first strike, double strike, vigilance, hexproof, deathtouch, menace, haste, trample and indestructible.