Federalism

Switch one troop with a better troop from your opponent's hand, and the same with an enchantment.
Federalism is a system of government in which a strong
central government exists, along with smaller regional
governments within the same system. This government
was established in the United States, when they realized
that the Articles of Confederation were too weak. This
was realized better by Shay's Rebellion, which
demonstrated the Articles' lack of power.