DreadeHorde Blood-Harvester

Flying, Lifelink, Wither
Boast—{1}{b}{b}: Proliferate. (You choose any
number of permanents and/or players with counters
on them, then give each another counter of a kind
already there.)
"They blackened sky, when they came. None were
safe. We weren't ready for that kind of assault Sir! It
was over before we knew we were fighting! There was
no warning!" Dying soldier's last words.