The October Revolution

Instantly summon Vladimir lenin to the battlefield. Any unit With tsar or king in the name owned by any player (including you) instantly dies. Any unit With the sub-category communism get's +4/4 stats for the next 5 turns and get's {ut}. All enemies get's - 2/2 stats for the next 5 turns. If that debuff would make their toughness or power become 0 or less then they die and can't be revived.