Trap the Trespassers is a rare Instant card from Tales of Middle-earth Commander (LTC), collector number 25. Current market price: $0.29, TCGplayer market prices via Scryfall.
Secret council — Each player secretly votes for a creature you don't control, then those votes are revealed. For each creature with one or more votes, put that many stun counters on it, then tap it. (If a permanent with a stun counter would become untapped, remove one from it instead.)