Surrounded by Orcs

Amass and mill are the same resource viewed from two angles, and this card is where a designer put both on one card: the Army's power feeds the mill directly, so the counters you spend assembling a board double as the fuel for graveyard damage. Three counters strip at least three cards, and any Army you had already grown pushes the number higher. That single shared value is what separates it from ordinary blue mill, which pays for its cards purely as attrition and leaves nothing behind. Here the mill leaves a body, and the body is a clock rather than a spent effect: blue gets a mill spell that leaves an Orc Army on the battlefield after it resolves, one that arrives already having damaged the opponent's library. The sorcery speed and the flat four-mana rate keep the trade fair; you cannot ambush anyone with it, and you commit the mana up front whether or not the Army sticks. What it opens up is a self-mill build that also wants a growing threat, or a targeted-mill deck that would rather not spend a card on a spell with no presence on board. Neither is a headline archetype, but the design idea (one spell feeding two win conditions off a single number) is cleaner than the rate lets on.