Shagrat, Loot Bearer (showcase Scrolls)

Whenever Shagrat, Loot Bearer attacks, attach up to one target Equipment to it.

Then amass Orcs X, where X is the number of Equipment attached to Shagrat. (Control
of the Equipment doesn't change. To amass Orcs X, put X+1/+1 counters 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.)