At the start of the game, each player puts their commander face up into the command zone
Impulse draw is Magic slang for exile your top card and you may play it this turn. It fits red because the color is so impulsive, it must have its resources ASAP, and having cheap cards in your deck raises the chances of casting them
Plus, you'll find a Collector Booster Sample Pack, and every card in each deck has artwork set in Middle-earth
That's nasty, because there is always someone frumping around with a bunch of key permanents to take out, like Primeval Titan, Deadeye Navigator, Elspeth, Sun's Champion, Karn Liberated, the aforementioned Mind's Eye or Sylvan Library, all of their non-lands
sacrifice triggers for Mayhem Devil and its ilk
I've also seen a few mentions of Vivi Ornitier, but we'll have to see if it's fast enough to keep up with the current meta