This deck is playing a somewhat assertive midrange angle, grinding out value at times with cards like Tireless Tracker or its various rebels that can find other rebels. Mirri, Weatherlight Duelist allows us to be aggressive if we want to, and allows us to blank swarm decks or decks that rely on Craterhoof Behemoth as long as Mirri is tapped.
The way this deck closes games out is by fetching Mirror Entity. It can be grabbed via the various rebels, Chord of Calling, or Yisan, The Wanderer Bard at instant speed to kill players in your following turn. Remember that with Mirri, Weatherlight Duelist, your opponent’s can’t block with more than one creature, so additional attack power propagated by Mirror Entity (or other various lord effects) feels much more lethal than it normally does.