Shagrat, Loot Bearer
Amass usually grows in a vacuum: an Army token piles up counters in its own corner while a separate game plays out around it. This design wires that mechanic into the Equipment axis and lets each half feed the other. The attack trigger reaches out to attach a piece of Equipment (the target clause takes any Equipment, so it can drag over an opponent's gear as readily as it moves your own onto the body), then counts every piece riding Shagrat and pours that number into the Army. The snowball builds along two vectors at once: the attached gear makes the attacker larger and harder to profitably block, while the Army swells by the same gear-count each swing. The restraint worth noticing is that the trigger only relocates one piece, but nothing stops you from paying normal equip costs during your main phase to load additional Equipment on ahead of combat, so the ceiling on the amass count is really a function of how much gear you can afford to stack on one legend before you attack. That makes this a rare instance of amass rewarding a board-wide Equipment subtheme instead of running as a self-contained clock, and the black-red cost lands it in the aggressive gear-and-tokens overlap where both halves of the trigger stay fueled.
