March from the Black Gate [The Lord of the Rings: Tales of Middle-Earth]

Set: The Lord of the Rings: Tales of Middle-Earth Type: Enchantment Rarity: Uncommon Cost: {1}{B} 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.) Like a storm, they broke upon the line of the Men of Gondor.