Stoneshock Giant is a uncommon Creature — Giant card from Commander 2015 (C15), collector number 165. Current market price: $0.10, TCGplayer market prices via Scryfall.
{6}{R}{R}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, creatures without flying your opponents control can't block this turn.