Creepy art is a bonus, as is lots of milling, and again the Surge foils are very reasonably priced for how difficult it was to pull that combination of frame and foiling
That's absurdly powerful, because Rakdos (and especially black) has loads of ways to pay life for valuable effects - from something as straightforward as Phyrexian Arena to absurd cards like Bolas' Citadel or Necropotence
I believe that the events winner, Martin Juza, won a pretty nice Alienware laptop
Its a card that demands removal and that can be handy for saving your other key players
For example, if your commander has the ability to gain a lot of life, you might build a Commander deck with cards that benefit from maintaining as high a life total as possible, and focus on out-enduring your foes - or you might use your life total as a resource, burning through it to fuel powerful abilities and relying on your commander to keep yourself from succumbing