Clamor Shaman is a uncommon Creature — Goblin Shaman card from Ravnica Allegiance (RNA), collector number 96. Current market price: $0.15 (foil $0.38), TCGplayer market prices via Scryfall.
Riot (This creature enters with your choice of a +1/+1 counter or haste.) Whenever this creature attacks, target creature an opponent controls can't block this turn.