The Dead Men of Dunharrow

Flying, ward {3}
When The Dead Men of Dunharrow enters
the battlefield, exile target player's graveyard. Put a
number of +1/+1 counters on The Dead Men of
Dunharrow equal to the number of creature cards
exiled this way.
"I see shapes of Men and of horses, and pale banners
like shreds of cloud, and spears like winter-thickets
on a misty night. The Dead are following."