Whenever you tap a land for mana while you're the monarch, add an additional one mana of any color
You get two cards off Midnight Reaper, double the damage output of Blood Artist, and so on
Less happily, milling does not generally impact the game
The Locust God wins with hasty insects, Nekusar, the Mindrazer and Niv-Mizzet, Parun deal enough damage with their card draw, and Xyris, the Writhing Storm makes enough snakes that plane is going to crash into you
Archangel Of Thune has both Flying and Lifelink as well, allowing it to trigger its own effect rather easily, especially in full pods where at least one opponent will likely be unable to block a flyer
If you have a good time with the pre-made decks, then you might want to get in on the secret of Magics success and start collecting cards and creating your own decks