The Raven Man

At the beginning of each combat, if there is a
creature with flying in a graveyard, The Raven
Man gains flying until end of turn. The same
is true for first strike, double strike, deathtouch,
haste, hexproof, indestructible, lifelink, menace,
reach, trample, and vigilance.
The Raven Man's power and toughness are each
equal to the number of creature cards in all graveyards.