Stoneshock Giant [Commander 2015]

Set: Commander 2015 Type: Creature — Giant Uncommon Cost: {3}{R}{R} {6}{R}{R}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Stoneshock Giant becomes monstrous, creatures without flying your opponents control can't block this turn.