Scenario

There are two different kinds of people in this world. One's who were born with real hearts (blood pumping organ vessels), others who were both with "Clarks" -Clocks that are to function like real hearts, except when it strikes a certain time of their owner, it stops. Causing the owner to stop moving for 30 minutes.- Both kinds of people get 2 powers each.
They spend their lives living in separate domains. And every time midnight strikes, a battle begins. The goal of the battle is whomever's team get's the most hearts of their opponent's team they are rewarded with more property of the Earth.