Crush Dissent is a common Instant card from War of the Spark (WAR), collector number 47. Current market price: $0.19 (foil $0.14), TCGplayer market prices via Scryfall.
Counter target spell unless its controller pays {2}. Amass Zombies 2. (Put two +1/+1 counters on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)