War Effort [Tarkir: Dragonstorm]

Set: Tarkir: Dragonstorm Type: Enchantment Rarity: Uncommon Cost: {3}{R} Creatures you control get +1/+0.Whenever you attack, create a 1/1 red Warrior creature token that's tapped and attacking. Sacrifice it at the beginning of the next end step. Community is strength. —Tenet of the Decree of Thunder