Uncivil Unrest [March of the Machine Commander]

Set: March of the Machine Commander Type: Enchantment Rarity: Rare Cost: {4}{R} Nontoken creatures you control have riot. (They enter the battlefield with your choice of a +1/+1 counter or haste.)If a creature you control with a +1/+1 counter on it would deal damage to a permanent or player, it deals double that damage instead.