March from the Black Gate

When March from the Black Gate enters the
battlefield and whenever an Army you
control attacks, amass Orcs 1. (Put a +1/+1 counter
on an Army you control. It's also an Orc.
If you don't control an Army, create a 0/0 black
Orc Army creature token first.)
"By all that you hold dear on this good earth,
I bid you stand, Men of the West!"